20937511204 has 27 divisors (see below), whose sum is σ = 37200485371. Its totient is φ = 10311179480.

The previous prime is 20937511181. The next prime is 20937511241. The reversal of 20937511204 is 40211573902.

It is a happy number.

The square root of 20937511204 is 144698.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20937511204.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20546607 + ... + 20547625.

Almost surely, 2^20937511204 is an apocalyptic number.

20937511204 is the 144698-th square number.

It is an amenable number.

20937511204 is a deficient number, since it is larger than the sum of its proper divisors (16262974167).

20937511204 is an frugal number, since it uses more digits than its factorization.

20937511204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 20937511204 in words is "twenty billion, nine hundred thirty-seven million, five hundred eleven thousand, two hundred four".