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68688154213332 = 223191277235915297
BaseRepresentation
bin11111001111000101101010…
…00010000011101111010100
3100000012112010120100000010220
433213202311002003233110
533000341314434311312
6402030522531314340
720316361331313213
oct1747426502035724
9300175116300126
1068688154213332
111a9825343a20a5
127854283a4b9b0
132c4335a6c0654
1412d674ad6307a
157e1b0ab62c8c
hex3e78b5083bd4

68688154213332 has 48 divisors (see below), whose sum is σ = 168839860472640. Its totient is φ = 21674010074112.

The previous prime is 68688154213307. The next prime is 68688154213339. The reversal of 68688154213332 is 23331245188686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68688154213339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117666493 + ... + 118248804.

It is an arithmetic number, because the mean of its divisors is an integer number (3517497093180).

Almost surely, 268688154213332 is an apocalyptic number.

It is an amenable number.

68688154213332 is an abundant number, since it is smaller than the sum of its proper divisors (100151706259308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68688154213332 is a wasteful number, since it uses less digits than its factorization.

68688154213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235916600 (or 235916598 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 60.

The spelling of 68688154213332 in words is "sixty-eight trillion, six hundred eighty-eight billion, one hundred fifty-four million, two hundred thirteen thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 1277 2554 3831 5108 7662 15324 24263 48526 72789 97052 145578 291156 235915297 471830594 707745891 943661188 1415491782 2830983564 4482390643 8964781286 13447171929 17929562572 26894343858 53788687716 301263834269 602527668538 903791502807 1205055337076 1807583005614 3615166011228 5724012851111 11448025702222 17172038553333 22896051404444 34344077106666 68688154213332