68528508864 has 56 divisors (see below), whose sum is σ = 181955846400. Its totient is φ = 22762101504.

The previous prime is 68528508859. The next prime is 68528508877. The reversal of 68528508864 is 46880582586.

It is a junction number, because it is equal to n+sod(n) for n = 68528508798 and 68528508807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576264 + ... + 684935.

Almost surely, 2^68528508864 is an apocalyptic number.

68528508864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68528508864 is an abundant number, since it is smaller than the sum of its proper divisors (113427337536).

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

68528508864 is a wasteful number, since it uses less digits than its factorization.

68528508864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261497 (or 1261487 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 68528508864 in words is "sixty-eight billion, five hundred twenty-eight million, five hundred eight thousand, eight hundred sixty-four".