66428010945288 has 48 divisors (see below), whose sum is σ = 179920687085100. Its totient is φ = 22141256065920.

The previous prime is 66428010945193. The next prime is 66428010945371. The reversal of 66428010945288 is 88254901082466.

66428010945288 is a `hidden beast` number, since 6 + 6 + 4 + 2 + 8 + 0 + 10 + 94 + 528 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42472879162884 + 23955131782404 = 6517122^2 + 4894398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28328103 + ... + 30583286.

Almost surely, 2^{66428010945288} is an apocalyptic number.

It is an amenable number.

66428010945288 is an abundant number, since it is smaller than the sum of its proper divisors (113492676139812).

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

66428010945288 is a wasteful number, since it uses less digits than its factorization.

66428010945288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58927062 (or 58927055 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 66428010945288 in words is "sixty-six trillion, four hundred twenty-eight billion, ten million, nine hundred forty-five thousand, two hundred eighty-eight".