64445463564 has 48 divisors (see below), whose sum is σ = 152573331456. Its totient is φ = 21169556800.

The previous prime is 64445463547. The next prime is 64445463583. The reversal of 64445463564 is 46536454446.

64445463564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113854 + ... + 376634.

It is an arithmetic number, because the mean of its divisors is an integer number (3178611072).

Almost surely, 2^64445463564 is an apocalyptic number.

It is an amenable number.

64445463564 is an abundant number, since it is smaller than the sum of its proper divisors (88127867892).

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

64445463564 is a wasteful number, since it uses less digits than its factorization.

64445463564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263086 (or 263084 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 51.

The spelling of 64445463564 in words is "sixty-four billion, four hundred forty-five million, four hundred sixty-three thousand, five hundred sixty-four".