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68747480291 = 731730981289
BaseRepresentation
bin100000000000110101…
…0110100110011100011
320120110010111211211202
41000001222310303203
52111243323332131
651325425031415
74652424640460
oct1000152646343
9216403454752
1068747480291
1127179184516
12113a748556b
136637ac4c29
143482534667
151bc569dbcb
hex1001ab4ce3

68747480291 has 8 divisors (see below), whose sum is σ = 78816401760. Its totient is φ = 58740522048.

The previous prime is 68747480281. The next prime is 68747480317. The reversal of 68747480291 is 19208474786.

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 68747480291 - 214 = 68747463907 is a prime.

It is a super-3 number, since 3×687474802913 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68747480231) 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, 15488426 + ... + 15492863.

It is an arithmetic number, because the mean of its divisors is an integer number (9852050220).

Almost surely, 268747480291 is an apocalyptic number.

68747480291 is a deficient number, since it is larger than the sum of its proper divisors (10068921469).

68747480291 is a wasteful number, since it uses less digits than its factorization.

68747480291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30981613.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 68747480291 in words is "sixty-eight billion, seven hundred forty-seven million, four hundred eighty thousand, two hundred ninety-one".

Divisors: 1 7 317 2219 30981289 216869023 9821068613 68747480291