72755371755 has 24 divisors (see below), whose sum is σ = 137573794800. Its totient is φ = 35275331520.

The previous prime is 72755371693. The next prime is 72755371769. The reversal of 72755371755 is 55717355727.

It is a happy number.

72755371755 is a `hidden beast` number, since 7 + 27 + 553 + 7 + 17 + 55 = 666.

It is not a de Polignac number, because 72755371755 - 2⁷ = 72755371627 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73489780 + ... + 73490769.

It is an arithmetic number, because the mean of its divisors is an integer number (5732241450).

Almost surely, 2^72755371755 is an apocalyptic number.

72755371755 is a deficient number, since it is larger than the sum of its proper divisors (64818423045).

72755371755 is a wasteful number, since it uses less digits than its factorization.

72755371755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146980571 (or 146980568 counting only the distinct ones).

The product of its digits is 9003750, while the sum is 54.

The spelling of 72755371755 in words is "seventy-two billion, seven hundred fifty-five million, three hundred seventy-one thousand, seven hundred fifty-five".