66516662328 has 32 divisors (see below), whose sum is σ = 166561209360. Its totient is φ = 22136280320.

The previous prime is 66516662291. The next prime is 66516662351. The reversal of 66516662328 is 82326661566.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 2231163 + ... + 2260778.

Almost surely, 2^66516662328 is an apocalyptic number.

It is an amenable number.

66516662328 is an abundant number, since it is smaller than the sum of its proper divisors (100044547032).

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

66516662328 is a wasteful number, since it uses less digits than its factorization.

66516662328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492567 (or 4492563 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 66516662328 in words is "sixty-six billion, five hundred sixteen million, six hundred sixty-two thousand, three hundred twenty-eight".