72272306722131 has 24 divisors (see below), whose sum is σ = 105267077233344. Its totient is φ = 47779018247040.

The previous prime is 72272306722129. The next prime is 72272306722151. The reversal of 72272306722131 is 13122760327227.

72272306722131 is a `hidden beast` number, since 7 + 2 + 272 + 306 + 72 + 2 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 72272306722131 - 2¹ = 72272306722129 is a prime.

It is a super-2 number, since 2×72272306722131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72272306722151) 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, 29984811 + ... + 32305316.

It is an arithmetic number, because the mean of its divisors is an integer number (4386128218056).

Almost surely, 2^{72272306722131} is an apocalyptic number.

72272306722131 is a deficient number, since it is larger than the sum of its proper divisors (32994770511213).

72272306722131 is a wasteful number, since it uses less digits than its factorization.

72272306722131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62291211 (or 62291208 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 72272306722131 in words is "seventy-two trillion, two hundred seventy-two billion, three hundred six million, seven hundred twenty-two thousand, one hundred thirty-one".