20013777663204 has 96 divisors (see below), whose sum is σ = 56051923294080. Its totient is φ = 5490800621568.

The previous prime is 20013777663179. The next prime is 20013777663233. The reversal of 20013777663204 is 40236677731002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198546279 + ... + 198647054.

It is an arithmetic number, because the mean of its divisors is an integer number (583874200980).

Almost surely, 2^{20013777663204} is an apocalyptic number.

It is an amenable number.

20013777663204 is an abundant number, since it is smaller than the sum of its proper divisors (36038145630876).

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

20013777663204 is a wasteful number, since it uses less digits than its factorization.

20013777663204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397193389 (or 397193387 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 20013777663204 in words is "twenty trillion, thirteen billion, seven hundred seventy-seven million, six hundred sixty-three thousand, two hundred four".