20138588306604 has 36 divisors (see below), whose sum is σ = 50908402799800. Its totient is φ = 6712529564160.

The previous prime is 20138588306591. The next prime is 20138588306611. The reversal of 20138588306604 is 40660388583102.

20138588306604 is a `hidden beast` number, since 20 + 1 + 3 + 8 + 5 + 8 + 8 + 3 + 0 + 6 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13147654 + ... + 14599245.

Almost surely, 2^{20138588306604} is an apocalyptic number.

It is an amenable number.

20138588306604 is an abundant number, since it is smaller than the sum of its proper divisors (30769814493196).

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

20138588306604 is a wasteful number, since it uses less digits than its factorization.

20138588306604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27767070 (or 27767065 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 20138588306604 in words is "twenty trillion, one hundred thirty-eight billion, five hundred eighty-eight million, three hundred six thousand, six hundred four".