72613637372168 has 16 divisors (see below), whose sum is σ = 136151027411280. Its totient is φ = 36306696729168.

The previous prime is 72613637372167. The next prime is 72613637372179. The reversal of 72613637372168 is 86127373631627.

It is a happy number.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72613637372168.

It is not an unprimeable number, because it can be changed into a prime (72613637372167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12688946 + ... + 17499617.

It is an arithmetic number, because the mean of its divisors is an integer number (8509439213205).

Almost surely, 2^{72613637372168} is an apocalyptic number.

It is an amenable number.

72613637372168 is a deficient number, since it is larger than the sum of its proper divisors (63537390039112).

72613637372168 is a wasteful number, since it uses less digits than its factorization.

72613637372168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30489236 (or 30489232 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 62.

The spelling of 72613637372168 in words is "seventy-two trillion, six hundred thirteen billion, six hundred thirty-seven million, three hundred seventy-two thousand, one hundred sixty-eight".