72715065108 has 24 divisors (see below), whose sum is σ = 193906840512. Its totient is φ = 20775732864.

The previous prime is 72715065061. The next prime is 72715065109. The reversal of 72715065108 is 80156051727.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 72715065108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72715065109) 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 7 ways as a sum of consecutive naturals, for example, 432827685 + ... + 432827852.

It is an arithmetic number, because the mean of its divisors is an integer number (8079451688).

Almost surely, 2^72715065108 is an apocalyptic number.

It is an amenable number.

72715065108 is an abundant number, since it is smaller than the sum of its proper divisors (121191775404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72715065108 is a wasteful number, since it uses less digits than its factorization.

72715065108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865655551 (or 865655549 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 72715065108 in words is "seventy-two billion, seven hundred fifteen million, sixty-five thousand, one hundred eight".