72220711015 has 4 divisors (see below), whose sum is σ = 86664853224. Its totient is φ = 57776568808.

The previous prime is 72220710983. The next prime is 72220711019. The reversal of 72220711015 is 51011702227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72220711015 - 2⁵ = 72220710983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72220711019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7222071097 + ... + 7222071106.

It is an arithmetic number, because the mean of its divisors is an integer number (21666213306).

Almost surely, 2^72220711015 is an apocalyptic number.

72220711015 is a deficient number, since it is larger than the sum of its proper divisors (14444142209).

72220711015 is a wasteful number, since it uses less digits than its factorization.

72220711015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14444142208.

The product of its (nonzero) digits is 1960, while the sum is 28.

The spelling of 72220711015 in words is "seventy-two billion, two hundred twenty million, seven hundred eleven thousand, fifteen".