22791715720 has 32 divisors (see below), whose sum is σ = 54297912600. Its totient is φ = 8580410368.

The previous prime is 22791715711. The next prime is 22791715721. The reversal of 22791715720 is 2751719722.

It can be written as a sum of positive squares in 4 ways, for example, as 18463917924 + 4327797796 = 135882^2 + 65786^2 .

It is a super-2 number, since 2×22791715720² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22791715721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16757935 + ... + 16759294.

Almost surely, 2^22791715720 is an apocalyptic number.

22791715720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22791715720 is an abundant number, since it is smaller than the sum of its proper divisors (31506196880).

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

22791715720 is a wasteful number, since it uses less digits than its factorization.

22791715720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33517257 (or 33517253 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 22791715720 in words is "twenty-two billion, seven hundred ninety-one million, seven hundred fifteen thousand, seven hundred twenty".