64426585604 has 12 divisors (see below), whose sum is σ = 112749367500. Its totient is φ = 32212480608.

The previous prime is 64426585577. The next prime is 64426585621. The reversal of 64426585604 is 40658562446.

It can be written as a sum of positive squares in 2 ways, for example, as 18266063104 + 46160522500 = 135152^2 + 214850^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579 + ... + 358970.

It is an arithmetic number, because the mean of its divisors is an integer number (9395780625).

Almost surely, 2^64426585604 is an apocalyptic number.

It is an amenable number.

64426585604 is a deficient number, since it is larger than the sum of its proper divisors (48322781896).

64426585604 is a wasteful number, since it uses less digits than its factorization.

64426585604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406102 (or 406100 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 64426585604 in words is "sixty-four billion, four hundred twenty-six million, five hundred eighty-five thousand, six hundred four".