72552215022615 has 48 divisors (see below), whose sum is σ = 125869347379776. Its totient is φ = 38660014886400.

The previous prime is 72552215022613. The next prime is 72552215022691. The reversal of 72552215022615 is 51622051225527.

72552215022615 is a `hidden beast` number, since 7 + 2 + 5 + 5 + 2 + 2 + 1 + 5 + 0 + 22 + 615 = 666.

It is not a de Polignac number, because 72552215022615 - 2¹ = 72552215022613 is a prime.

It is a super-2 number, since 2×72552215022615² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72552215022613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227815422 + ... + 228133668.

It is an arithmetic number, because the mean of its divisors is an integer number (2622278070412).

Almost surely, 2^{72552215022615} is an apocalyptic number.

72552215022615 is a deficient number, since it is larger than the sum of its proper divisors (53317132357161).

72552215022615 is a wasteful number, since it uses less digits than its factorization.

72552215022615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322760 (or 322757 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 72552215022615 in words is "seventy-two trillion, five hundred fifty-two billion, two hundred fifteen million, twenty-two thousand, six hundred fifteen".