72221500715 has 16 divisors (see below), whose sum is σ = 106665601728. Its totient is φ = 45713828736.

The previous prime is 72221500711. The next prime is 72221500759. The reversal of 72221500715 is 51700512227.

It is a cyclic number.

It is not a de Polignac number, because 72221500715 - 2² = 72221500711 is a prime.

It is a super-2 number, since 2×72221500715² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72221500711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79363832 + ... + 79364741.

It is an arithmetic number, because the mean of its divisors is an integer number (6666600108).

Almost surely, 2^72221500715 is an apocalyptic number.

72221500715 is a deficient number, since it is larger than the sum of its proper divisors (34444101013).

72221500715 is a wasteful number, since it uses less digits than its factorization.

72221500715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728598.

The product of its (nonzero) digits is 9800, while the sum is 32.

The spelling of 72221500715 in words is "seventy-two billion, two hundred twenty-one million, five hundred thousand, seven hundred fifteen".