72224855715 has 16 divisors (see below), whose sum is σ = 115570304928. Its totient is φ = 38516411136.

The previous prime is 72224855713. The next prime is 72224855741. The reversal of 72224855715 is 51755842227.

It is not a de Polignac number, because 72224855715 - 2¹ = 72224855713 is a prime.

It is a super-2 number, since 2×72224855715² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72224855713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45012 + ... + 382721.

It is an arithmetic number, because the mean of its divisors is an integer number (7223144058).

Almost surely, 2^72224855715 is an apocalyptic number.

72224855715 is a deficient number, since it is larger than the sum of its proper divisors (43345449213).

72224855715 is a wasteful number, since it uses less digits than its factorization.

72224855715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438998.

The product of its digits is 1568000, while the sum is 48.

The spelling of 72224855715 in words is "seventy-two billion, two hundred twenty-four million, eight hundred fifty-five thousand, seven hundred fifteen".