641615656633 has 32 divisors (see below), whose sum is σ = 793699914240. Its totient is φ = 506176680960.

The previous prime is 641615656601. The next prime is 641615656681. The reversal of 641615656633 is 336656516146.

It is not a de Polignac number, because 641615656633 - 2⁵ = 641615656601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641615654633) 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, 1000348 + ... + 1511266.

It is an arithmetic number, because the mean of its divisors is an integer number (24803122320).

Almost surely, 2^641615656633 is an apocalyptic number.

It is an amenable number.

641615656633 is a deficient number, since it is larger than the sum of its proper divisors (152084257607).

641615656633 is a wasteful number, since it uses less digits than its factorization.

641615656633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511177.

The product of its digits is 6998400, while the sum is 52.

The spelling of 641615656633 in words is "six hundred forty-one billion, six hundred fifteen million, six hundred fifty-six thousand, six hundred thirty-three".