64497692952 has 144 divisors (see below), whose sum is σ = 221673558600. Its totient is φ = 16752637440.

The previous prime is 64497692887. The next prime is 64497693023. The reversal of 64497692952 is 25929679446.

64497692952 is a `hidden beast` number, since 6 + 4 + 497 + 6 + 92 + 9 + 52 = 666.

It is a super-2 number, since 2×64497692952² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 64497692952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 792177 + ... + 869792.

Almost surely, 2^64497692952 is an apocalyptic number.

It is an amenable number.

64497692952 is an abundant number, since it is smaller than the sum of its proper divisors (157175865648).

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

64497692952 is a wasteful number, since it uses less digits than its factorization.

64497692952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662006 (or 1661992 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 64497692952 in words is "sixty-four billion, four hundred ninety-seven million, six hundred ninety-two thousand, nine hundred fifty-two".