22901561664 has 56 divisors (see below), whose sum is σ = 60616843968. Its totient is φ = 7630940160.

The previous prime is 22901561659. The next prime is 22901561681. The reversal of 22901561664 is 46616510922.

It is a congruent number.

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, 514504 + ... + 557240.

Almost surely, 2^22901561664 is an apocalyptic number.

22901561664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22901561664 is an abundant number, since it is smaller than the sum of its proper divisors (37715282304).

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

22901561664 is a wasteful number, since it uses less digits than its factorization.

22901561664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45543 (or 45533 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 22901561664 in words is "twenty-two billion, nine hundred one million, five hundred sixty-one thousand, six hundred sixty-four".