64732590474 has 16 divisors (see below), whose sum is σ = 136279138080. Its totient is φ = 20441870640.

The previous prime is 64732590457. The next prime is 64732590521. The reversal of 64732590474 is 47409523746.

It is a happy number.

64732590474 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, 283914757 + ... + 283914984.

It is an arithmetic number, because the mean of its divisors is an integer number (8517446130).

Almost surely, 2^64732590474 is an apocalyptic number.

64732590474 is an abundant number, since it is smaller than the sum of its proper divisors (71546547606).

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

64732590474 is a wasteful number, since it uses less digits than its factorization.

64732590474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567829765.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 64732590474 in words is "sixty-four billion, seven hundred thirty-two million, five hundred ninety thousand, four hundred seventy-four".