20402656204 has 12 divisors (see below), whose sum is σ = 40805312464. Its totient is φ = 8743995504.

The previous prime is 20402656189. The next prime is 20402656213. The reversal of 20402656204 is 40265620402.

20402656204 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364333119 + ... + 364333174.

Almost surely, 2^20402656204 is an apocalyptic number.

It is an amenable number.

20402656204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20402656204 is a wasteful number, since it uses less digits than its factorization.

20402656204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728666304 (or 728666302 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 20402656204 in words is "twenty billion, four hundred two million, six hundred fifty-six thousand, two hundred four".