64931470464 has 64 divisors (see below), whose sum is σ = 197113400640. Its totient is φ = 18551847936.

The previous prime is 64931470411. The next prime is 64931470477. The reversal of 64931470464 is 46407413946.

64931470464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12075339 + ... + 12080714.

It is an arithmetic number, because the mean of its divisors is an integer number (3079896885).

Almost surely, 2^64931470464 is an apocalyptic number.

64931470464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64931470464 is an abundant number, since it is smaller than the sum of its proper divisors (132181930176).

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

64931470464 is a wasteful number, since it uses less digits than its factorization.

64931470464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24156077 (or 24156065 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 64931470464 in words is "sixty-four billion, nine hundred thirty-one million, four hundred seventy thousand, four hundred sixty-four".