20307158608 has 40 divisors (see below), whose sum is σ = 43731817056. Its totient is φ = 9056361600.

The previous prime is 20307158549. The next prime is 20307158657. The reversal of 20307158608 is 80685170302.

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, 1079178 + ... + 1097833.

Almost surely, 2^20307158608 is an apocalyptic number.

It is an amenable number.

20307158608 is an abundant number, since it is smaller than the sum of its proper divisors (23424658448).

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

20307158608 is a wasteful number, since it uses less digits than its factorization.

20307158608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177083 (or 2177077 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 20307158608 in words is "twenty billion, three hundred seven million, one hundred fifty-eight thousand, six hundred eight".