66075844896 has 72 divisors (see below), whose sum is σ = 187954341120. Its totient is φ = 22019285376.

The previous prime is 66075844843. The next prime is 66075844903. The reversal of 66075844896 is 69844857066.

66075844896 is a `hidden beast` number, since 6 + 6 + 0 + 7 + 584 + 48 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 1099401 + ... + 1157943.

It is an arithmetic number, because the mean of its divisors is an integer number (2610476960).

Almost surely, 2^66075844896 is an apocalyptic number.

It is an amenable number.

66075844896 is an abundant number, since it is smaller than the sum of its proper divisors (121878496224).

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

66075844896 is a wasteful number, since it uses less digits than its factorization.

66075844896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62478 (or 62467 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 66075844896 in words is "sixty-six billion, seventy-five million, eight hundred forty-four thousand, eight hundred ninety-six".