72944228916 has 72 divisors (see below), whose sum is σ = 205924895904. Its totient is φ = 22444374240.

The previous prime is 72944228893. The next prime is 72944228923. The reversal of 72944228916 is 61982244927.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 2873730 + ... + 2899001.

Almost surely, 2^72944228916 is an apocalyptic number.

It is an amenable number.

72944228916 is an abundant number, since it is smaller than the sum of its proper divisors (132980666988).

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

72944228916 is a wasteful number, since it uses less digits than its factorization.

72944228916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772763 (or 5772749 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 72944228916 in words is "seventy-two billion, nine hundred forty-four million, two hundred twenty-eight thousand, nine hundred sixteen".