66000688928 has 48 divisors (see below), whose sum is σ = 132807112704. Its totient is φ = 32279224320.

The previous prime is 66000688879. The next prime is 66000688951. The reversal of 66000688928 is 82988600066.

It is a self number, because there is not a number n which added to its sum of digits gives 66000688928.

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, 174176 + ... + 402912.

It is an arithmetic number, because the mean of its divisors is an integer number (2766814848).

Almost surely, 2^66000688928 is an apocalyptic number.

It is an amenable number.

66000688928 is an abundant number, since it is smaller than the sum of its proper divisors (66806423776).

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

66000688928 is a wasteful number, since it uses less digits than its factorization.

66000688928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228945 (or 228937 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 66000688928 in words is "sixty-six billion, six hundred eighty-eight thousand, nine hundred twenty-eight".