64466405256 has 32 divisors (see below), whose sum is σ = 175817469600. Its totient is φ = 19535274240.

The previous prime is 64466405173. The next prime is 64466405287. The reversal of 64466405256 is 65250466446.

64466405256 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 7 ways as a sum of consecutive naturals, for example, 122095201 + ... + 122095728.

It is an arithmetic number, because the mean of its divisors is an integer number (5494295925).

Almost surely, 2^64466405256 is an apocalyptic number.

64466405256 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64466405256 is an abundant number, since it is smaller than the sum of its proper divisors (111351064344).

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

64466405256 is a wasteful number, since it uses less digits than its factorization.

64466405256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244190949 (or 244190945 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 64466405256 in words is "sixty-four billion, four hundred sixty-six million, four hundred five thousand, two hundred fifty-six".