72153873165 has 32 divisors (see below), whose sum is σ = 129013057152. Its totient is φ = 34130432000.

The previous prime is 72153873161. The next prime is 72153873167. The reversal of 72153873165 is 56137835127.

It is not a de Polignac number, because 72153873165 - 2² = 72153873161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72153873161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5326116 + ... + 5339645.

It is an arithmetic number, because the mean of its divisors is an integer number (4031658036).

Almost surely, 2^72153873165 is an apocalyptic number.

It is an amenable number.

72153873165 is a deficient number, since it is larger than the sum of its proper divisors (56859183987).

72153873165 is a wasteful number, since it uses less digits than its factorization.

72153873165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665821.

The product of its digits is 1058400, while the sum is 48.

The spelling of 72153873165 in words is "seventy-two billion, one hundred fifty-three million, eight hundred seventy-three thousand, one hundred sixty-five".