72799957944 has 48 divisors (see below), whose sum is σ = 225333204720. Its totient is φ = 20799987840.

The previous prime is 72799957943. The next prime is 72799957957. The reversal of 72799957944 is 44975999727.

72799957944 is a `hidden beast` number, since 7 + 2 + 7 + 9 + 9 + 9 + 579 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72799957943) 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, 72221677 + ... + 72222684.

It is an arithmetic number, because the mean of its divisors is an integer number (4694441765).

Almost surely, 2^72799957944 is an apocalyptic number.

It is an amenable number.

72799957944 is an abundant number, since it is smaller than the sum of its proper divisors (152533246776).

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

72799957944 is a wasteful number, since it uses less digits than its factorization.

72799957944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144444380 (or 144444373 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 72.

The spelling of 72799957944 in words is "seventy-two billion, seven hundred ninety-nine million, nine hundred fifty-seven thousand, nine hundred forty-four".