20397183088 has 40 divisors (see below), whose sum is σ = 42941457920. Its totient is φ = 9350147520.

The previous prime is 20397183077. The next prime is 20397183113. The reversal of 20397183088 is 88038179302.

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, 1072770 + ... + 1091617.

It is an arithmetic number, because the mean of its divisors is an integer number (1073536448).

Almost surely, 2^20397183088 is an apocalyptic number.

It is an amenable number.

20397183088 is an abundant number, since it is smaller than the sum of its proper divisors (22544274832).

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

20397183088 is a wasteful number, since it uses less digits than its factorization.

20397183088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164445 (or 2164439 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 20397183088 in words is "twenty billion, three hundred ninety-seven million, one hundred eighty-three thousand, eighty-eight".