72544690755 has 12 divisors (see below), whose sum is σ = 125744130720. Its totient is φ = 38690501712.

The previous prime is 72544690753. The next prime is 72544690783. The reversal of 72544690755 is 55709644527.

It is a happy number.

72544690755 is a `hidden beast` number, since 7 + 2 + 544 + 6 + 90 + 7 + 5 + 5 = 666.

It is not a de Polignac number, because 72544690755 - 2¹ = 72544690753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72544690753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806052075 + ... + 806052164.

It is an arithmetic number, because the mean of its divisors is an integer number (10478677560).

Almost surely, 2^72544690755 is an apocalyptic number.

72544690755 is a deficient number, since it is larger than the sum of its proper divisors (53199439965).

72544690755 is a wasteful number, since it uses less digits than its factorization.

72544690755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612104250 (or 1612104247 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 54.

The spelling of 72544690755 in words is "seventy-two billion, five hundred forty-four million, six hundred ninety thousand, seven hundred fifty-five".