68680432356 has 24 divisors (see below), whose sum is σ = 160503589344. Its totient is φ = 22857870720.

The previous prime is 68680432313. The next prime is 68680432367. The reversal of 68680432356 is 65323408686.

It is a junction number, because it is equal to n+sod(n) for n = 68680432299 and 68680432308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4442805 + ... + 4458236.

It is an arithmetic number, because the mean of its divisors is an integer number (6687649556).

Almost surely, 2^68680432356 is an apocalyptic number.

It is an amenable number.

68680432356 is an abundant number, since it is smaller than the sum of its proper divisors (91823156988).

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

68680432356 is a wasteful number, since it uses less digits than its factorization.

68680432356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901691 (or 8901689 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 68680432356 in words is "sixty-eight billion, six hundred eighty million, four hundred thirty-two thousand, three hundred fifty-six".