64992927924 has 36 divisors (see below), whose sum is σ = 168294699300. Its totient is φ = 21135911040.

The previous prime is 64992927907. The next prime is 64992927931. The reversal of 64992927924 is 42972929946.

It can be written as a sum of positive squares in 2 ways, for example, as 34931610000 + 30061317924 = 186900^2 + 173382^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 22015099 + ... + 22018050.

Almost surely, 2^64992927924 is an apocalyptic number.

It is an amenable number.

64992927924 is an abundant number, since it is smaller than the sum of its proper divisors (103301771376).

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

64992927924 is a wasteful number, since it uses less digits than its factorization.

64992927924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44033200 (or 44033195 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 64992927924 in words is "sixty-four billion, nine hundred ninety-two million, nine hundred twenty-seven thousand, nine hundred twenty-four".