20652805968 has 20 divisors (see below), whose sum is σ = 53353082208. Its totient is φ = 6884268640.

The previous prime is 20652805949. The next prime is 20652805973. The reversal of 20652805968 is 86950825602.

It is a self number, because there is not a number n which added to its sum of digits gives 20652805968.

It is a congruent 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, 215133348 + ... + 215133443.

Almost surely, 2^20652805968 is an apocalyptic number.

It is an amenable number.

20652805968 is an abundant number, since it is smaller than the sum of its proper divisors (32700276240).

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

20652805968 is a wasteful number, since it uses less digits than its factorization.

20652805968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430266802 (or 430266796 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 20652805968 in words is "twenty billion, six hundred fifty-two million, eight hundred five thousand, nine hundred sixty-eight".