64321065936 has 30 divisors (see below), whose sum is σ = 180009650210. Its totient is φ = 21440355264.

The previous prime is 64321065929. The next prime is 64321065943. The reversal of 64321065936 is 63956012346.

64321065936 is a `hidden beast` number, since 6 + 43 + 2 + 10 + 6 + 593 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (64321065929) and next prime (64321065943).

It can be written as a sum of positive squares in only one way, i.e., 39752384400 + 24568681536 = 199380^2 + 156744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64321065891 and 64321065900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223336891 + ... + 223337178.

Almost surely, 2^64321065936 is an apocalyptic number.

It is an amenable number.

64321065936 is an abundant number, since it is smaller than the sum of its proper divisors (115688584274).

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

64321065936 is a wasteful number, since it uses less digits than its factorization.

64321065936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446674083 (or 446674074 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 64321065936 in words is "sixty-four billion, three hundred twenty-one million, sixty-five thousand, nine hundred thirty-six".