21900559088 has 40 divisors (see below), whose sum is σ = 44627607936. Its totient is φ = 10397088000.

The previous prime is 21900559067. The next prime is 21900559117. The reversal of 21900559088 is 88095500912.

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, 390263 + ... + 442838.

Almost surely, 2^21900559088 is an apocalyptic number.

It is an amenable number.

21900559088 is an abundant number, since it is smaller than the sum of its proper divisors (22727048848).

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

21900559088 is a wasteful number, since it uses less digits than its factorization.

21900559088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833193 (or 833187 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 21900559088 in words is "twenty-one billion, nine hundred million, five hundred fifty-nine thousand, eighty-eight".