72267714445221 has 24 divisors (see below), whose sum is σ = 106647817221504. Its totient is φ = 47135654741760.

The previous prime is 72267714445133. The next prime is 72267714445229. The reversal of 72267714445221 is 12254441776227.

72267714445221 is a `hidden beast` number, since 7 + 2 + 2 + 6 + 7 + 71 + 4 + 44 + 522 + 1 = 666.

It is not a de Polignac number, because 72267714445221 - 2²⁵ = 72267680890789 is a prime.

It is a super-2 number, since 2×72267714445221² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72267714445229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31026195 + ... + 33274016.

It is an arithmetic number, because the mean of its divisors is an integer number (4443659050896).

Almost surely, 2^{72267714445221} is an apocalyptic number.

It is an amenable number.

72267714445221 is a deficient number, since it is larger than the sum of its proper divisors (34380102776283).

72267714445221 is a wasteful number, since it uses less digits than its factorization.

72267714445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64302921 (or 64302918 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 54.

The spelling of 72267714445221 in words is "seventy-two trillion, two hundred sixty-seven billion, seven hundred fourteen million, four hundred forty-five thousand, two hundred twenty-one".