581339077664 has 24 divisors (see below), whose sum is σ = 1144528693308. Its totient is φ = 290665123840.

The previous prime is 581339077637. The next prime is 581339077691. The reversal of 581339077664 is 466770933185.

It is an interprime number because it is at equal distance from previous prime (581339077637) and next prime (581339077691).

It can be written as a sum of positive squares in 2 ways, for example, as 408193210000 + 173145867664 = 638900^2 + 416108^2 .

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, 3388184 + ... + 3555624.

Almost surely, 2^581339077664 is an apocalyptic number.

It is an amenable number.

581339077664 is a deficient number, since it is larger than the sum of its proper divisors (563189615644).

581339077664 is a wasteful number, since it uses less digits than its factorization.

581339077664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275948 (or 275940 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 581339077664 in words is "five hundred eighty-one billion, three hundred thirty-nine million, seventy-seven thousand, six hundred sixty-four".