64257712626 has 64 divisors (see below), whose sum is σ = 134966476800. Its totient is φ = 20367144000.

The previous prime is 64257712613. The next prime is 64257712627. The reversal of 64257712626 is 62621775246.

It is not an unprimeable number, because it can be changed into a prime (64257712627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14217195 + ... + 14221713.

It is an arithmetic number, because the mean of its divisors is an integer number (2108851200).

Almost surely, 2^64257712626 is an apocalyptic number.

64257712626 is an abundant number, since it is smaller than the sum of its proper divisors (70708764174).

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

64257712626 is a wasteful number, since it uses less digits than its factorization.

64257712626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775.

The product of its digits is 1693440, while the sum is 48.

The spelling of 64257712626 in words is "sixty-four billion, two hundred fifty-seven million, seven hundred twelve thousand, six hundred twenty-six".