72452788155 has 96 divisors (see below), whose sum is σ = 147104875008. Its totient is φ = 32596300800.

The previous prime is 72452788153. The next prime is 72452788159. The reversal of 72452788155 is 55188725427.

It is a happy number.

72452788155 is a `hidden beast` number, since 7 + 24 + 527 + 88 + 15 + 5 = 666.

It is not a de Polignac number, because 72452788155 - 2¹ = 72452788153 is a prime.

It is a super-2 number, since 2×72452788155² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72452788151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 536832 + ... + 658098.

It is an arithmetic number, because the mean of its divisors is an integer number (1532342448).

Almost surely, 2^72452788155 is an apocalyptic number.

72452788155 is an abundant number, since it is smaller than the sum of its proper divisors (74652086853).

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

72452788155 is a wasteful number, since it uses less digits than its factorization.

72452788155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121377 (or 121374 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 54.

The spelling of 72452788155 in words is "seventy-two billion, four hundred fifty-two million, seven hundred eighty-eight thousand, one hundred fifty-five".