20792790720 has 672 divisors, whose sum is σ = 81328735488. Its totient is φ = 5025411072.

The previous prime is 20792790703. The next prime is 20792790749. The reversal of 20792790720 is 2709729702.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 67728807 + ... + 67729113.

It is an arithmetic number, because the mean of its divisors is an integer number (121024904).

Almost surely, 2^20792790720 is an apocalyptic number.

20792790720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20792790720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40664367744).

20792790720 is an abundant number, since it is smaller than the sum of its proper divisors (60535944768).

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

20792790720 is a wasteful number, since it uses less digits than its factorization.

20792790720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The spelling of 20792790720 in words is "twenty billion, seven hundred ninety-two million, seven hundred ninety thousand, seven hundred twenty".