72815004255 has 96 divisors (see below), whose sum is σ = 147260712960. Its totient is φ = 30517482240.

The previous prime is 72815004253. The next prime is 72815004263. The reversal of 72815004255 is 55240051827.

It is not a de Polignac number, because 72815004255 - 2¹ = 72815004253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72815004253) 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 95 ways as a sum of consecutive naturals, for example, 348817 + ... + 517013.

It is an arithmetic number, because the mean of its divisors is an integer number (1533965760).

Almost surely, 2^72815004255 is an apocalyptic number.

72815004255 is an abundant number, since it is smaller than the sum of its proper divisors (74445708705).

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

72815004255 is a wasteful number, since it uses less digits than its factorization.

72815004255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168269 (or 168262 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 72815004255 in words is "seventy-two billion, eight hundred fifteen million, four thousand, two hundred fifty-five".