20939438592 has 60 divisors (see below), whose sum is σ = 60432650850. Its totient is φ = 6979811328.

The previous prime is 20939438587. The next prime is 20939438617. The reversal of 20939438592 is 29583493902.

20939438592 is a `hidden beast` number, since 2 + 0 + 9 + 3 + 9 + 43 + 8 + 592 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19820134656 + 1119303936 = 140784^2 + 33456^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2267467 + ... + 2276682.

Almost surely, 2^20939438592 is an apocalyptic number.

It is an amenable number.

20939438592 is an abundant number, since it is smaller than the sum of its proper divisors (39493212258).

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

20939438592 is an equidigital number, since it uses as much as digits as its factorization.

20939438592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544173 (or 4544154 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 20939438592 in words is "twenty billion, nine hundred thirty-nine million, four hundred thirty-eight thousand, five hundred ninety-two".