64564951932 has 60 divisors (see below), whose sum is σ = 181769052696. Its totient is φ = 19866137760.

The previous prime is 64564951903. The next prime is 64564951939. The reversal of 64564951932 is 23915946546.

64564951932 is a `hidden beast` number, since 6 + 4 + 56 + 49 + 519 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64564951939) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7660194 + ... + 7668617.

Almost surely, 2^64564951932 is an apocalyptic number.

It is an amenable number.

64564951932 is an abundant number, since it is smaller than the sum of its proper divisors (117204100764).

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

64564951932 is a wasteful number, since it uses less digits than its factorization.

64564951932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15328840 (or 15328829 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 64564951932 in words is "sixty-four billion, five hundred sixty-four million, nine hundred fifty-one thousand, nine hundred thirty-two".