72918769044 has 48 divisors (see below), whose sum is σ = 186014195136. Its totient is φ = 22048646400.

The previous prime is 72918769009. The next prime is 72918769057. The reversal of 72918769044 is 44096781927.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538297 + ... + 660000.

It is an arithmetic number, because the mean of its divisors is an integer number (3875295732).

Almost surely, 2^72918769044 is an apocalyptic number.

It is an amenable number.

72918769044 is an abundant number, since it is smaller than the sum of its proper divisors (113095426092).

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

72918769044 is a wasteful number, since it uses less digits than its factorization.

72918769044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198776 (or 1198774 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 72918769044 in words is "seventy-two billion, nine hundred eighteen million, seven hundred sixty-nine thousand, forty-four".