68858444631 has 8 divisors (see below), whose sum is σ = 97211921904. Its totient is φ = 43205298560.

The previous prime is 68858444581. The next prime is 68858444639. The reversal of 68858444631 is 13644485886.

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 68858444631 - 2²² = 68854250327 is a prime.

It is a super-2 number, since 2×68858444631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68858444639) 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, 675082740 + ... + 675082841.

It is an arithmetic number, because the mean of its divisors is an integer number (12151490238).

Almost surely, 2^68858444631 is an apocalyptic number.

68858444631 is a deficient number, since it is larger than the sum of its proper divisors (28353477273).

68858444631 is a wasteful number, since it uses less digits than its factorization.

68858444631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350165601.

The product of its digits is 17694720, while the sum is 57.

The spelling of 68858444631 in words is "sixty-eight billion, eight hundred fifty-eight million, four hundred forty-four thousand, six hundred thirty-one".