66024379505664 has 132 divisors (see below), whose sum is σ = 191601978188400. Its totient is φ = 21897532293120.

The previous prime is 66024379505659. The next prime is 66024379505671. The reversal of 66024379505664 is 46650597342066.

66024379505664 is a `hidden beast` number, since 6 + 6 + 0 + 2 + 437 + 95 + 0 + 56 + 64 = 666.

It is a congruent number.

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, 16166277 + ... + 19834244.

Almost surely, 2^{66024379505664} is an apocalyptic number.

66024379505664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66024379505664 is an abundant number, since it is smaller than the sum of its proper divisors (125577598682736).

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

66024379505664 is a wasteful number, since it uses less digits than its factorization.

66024379505664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000746 (or 36000725 counting only the distinct ones).

The product of its (nonzero) digits is 195955200, while the sum is 63.

The spelling of 66024379505664 in words is "sixty-six trillion, twenty-four billion, three hundred seventy-nine million, five hundred five thousand, six hundred sixty-four".