72118713 has 16 divisors (see below), whose sum is σ = 98796096. Its totient is φ = 46767360.

The previous prime is 72118693. The next prime is 72118729. The reversal of 72118713 is 31781127.

It is not a de Polignac number, because 72118713 - 2⁵ = 72118681 is a prime.

It is a super-2 number, since 2×72118713² = 10402217529552738, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72118763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55570 + ... + 56852.

It is an arithmetic number, because the mean of its divisors is an integer number (6174756).

Almost surely, 2^72118713 is an apocalyptic number.

It is an amenable number.

72118713 is a deficient number, since it is larger than the sum of its proper divisors (26677383).

72118713 is a wasteful number, since it uses less digits than its factorization.

72118713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its digits is 2352, while the sum is 30.

The square root of 72118713 is about 8492.2737238033. The cubic root of 72118713 is about 416.2452807228.

The spelling of 72118713 in words is "seventy-two million, one hundred eighteen thousand, seven hundred thirteen".