20916790272 has 704 divisors, whose sum is σ = 76466749440. Its totient is φ = 5518098432.

The previous prime is 20916790211. The next prime is 20916790303. The reversal of 20916790272 is 27209761902.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 164699073 + ... + 164699199.

Almost surely, 2^20916790272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20916790272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38233374720).

20916790272 is an abundant number, since it is smaller than the sum of its proper divisors (55549959168).

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

20916790272 is a wasteful number, since it uses less digits than its factorization.

20916790272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 20916790272 in words is "twenty billion, nine hundred sixteen million, seven hundred ninety thousand, two hundred seventy-two".