20799488984 has 32 divisors (see below), whose sum is σ = 43088461920. Its totient is φ = 9362428416.

The previous prime is 20799488971. The next prime is 20799489013. The reversal of 20799488984 is 48988499702.

It is a Harshad number since it is a multiple of its sum of digits (68).

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, 3321599 + ... + 3327854.

It is an arithmetic number, because the mean of its divisors is an integer number (1346514435).

Almost surely, 2^20799488984 is an apocalyptic number.

It is an amenable number.

20799488984 is an abundant number, since it is smaller than the sum of its proper divisors (22288972936).

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

20799488984 is a wasteful number, since it uses less digits than its factorization.

20799488984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649499 (or 6649495 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 68.

The spelling of 20799488984 in words is "twenty billion, seven hundred ninety-nine million, four hundred eighty-eight thousand, nine hundred eighty-four".