68602666656 has 24 divisors (see below), whose sum is σ = 180082000224. Its totient is φ = 22867555520.

The previous prime is 68602666603. The next prime is 68602666663. The reversal of 68602666656 is 65666620686.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 68602666596 and 68602666605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357305460 + ... + 357305651.

It is an arithmetic number, because the mean of its divisors is an integer number (7503416676).

Almost surely, 2^68602666656 is an apocalyptic number.

It is an amenable number.

68602666656 is an abundant number, since it is smaller than the sum of its proper divisors (111479333568).

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

68602666656 is a wasteful number, since it uses less digits than its factorization.

68602666656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714611124 (or 714611116 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 57.

The spelling of 68602666656 in words is "sixty-eight billion, six hundred two million, six hundred sixty-six thousand, six hundred fifty-six".