72297116920 has 32 divisors (see below), whose sum is σ = 185906872800. Its totient is φ = 24787582848.

The previous prime is 72297116893. The next prime is 72297116929. The reversal of 72297116920 is 2961179227.

It is a happy number.

It is a super-2 number, since 2×72297116920² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72297116929) 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, 129101715 + ... + 129102274.

It is an arithmetic number, because the mean of its divisors is an integer number (5809589775).

Almost surely, 2^72297116920 is an apocalyptic number.

72297116920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72297116920 is an abundant number, since it is smaller than the sum of its proper divisors (113609755880).

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

72297116920 is a wasteful number, since it uses less digits than its factorization.

72297116920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258204007 (or 258204003 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 72297116920 in words is "seventy-two billion, two hundred ninety-seven million, one hundred sixteen thousand, nine hundred twenty".