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68915842925269 = 971076639930911
BaseRepresentation
bin11111010101101101110000…
…10101100100001011010101
3100001000021211120210222211211
433222312320111210023111
533013104121242102034
6402323300130501421
720342001555402004
oct1752667025441325
9301007746728754
1068915842925269
111aa600547763aa
127890428434871
132c5b9752a9832
14130378a522c3b
157e79d4d5ed64
hex3eadb85642d5

68915842925269 has 8 divisors (see below), whose sum is σ = 70277028772608. Its totient is φ = 67567936940160.

The previous prime is 68915842925239. The next prime is 68915842925323. The reversal of 68915842925269 is 96252924851986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68915842925269 - 221 = 68915840828117 is a prime.

It is a super-2 number, since 2×689158429252692 (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68915842925195 and 68915842925204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68915842925239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319955077 + ... + 3319975834.

It is an arithmetic number, because the mean of its divisors is an integer number (8784628596576).

Almost surely, 268915842925269 is an apocalyptic number.

It is an amenable number.

68915842925269 is a deficient number, since it is larger than the sum of its proper divisors (1361185847339).

68915842925269 is a wasteful number, since it uses less digits than its factorization.

68915842925269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639931115.

The product of its digits is 1343692800, while the sum is 76.

The spelling of 68915842925269 in words is "sixty-eight trillion, nine hundred fifteen billion, eight hundred forty-two million, nine hundred twenty-five thousand, two hundred sixty-nine".

Divisors: 1 97 107 10379 6639930911 644073298367 710472607477 68915842925269