20797718112 has 60 divisors (see below), whose sum is σ = 61165518876. Its totient is φ = 6932571840.

The previous prime is 20797718107. The next prime is 20797718129. The reversal of 20797718112 is 21181779702.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4009314 + ... + 4014497.

Almost surely, 2^20797718112 is an apocalyptic number.

It is an amenable number.

20797718112 is an abundant number, since it is smaller than the sum of its proper divisors (40367800764).

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

20797718112 is an equidigital number, since it uses as much as digits as its factorization.

20797718112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023833 (or 8023816 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 45.

The spelling of 20797718112 in words is "twenty billion, seven hundred ninety-seven million, seven hundred eighteen thousand, one hundred twelve".