72924517938 has 16 divisors (see below), whose sum is σ = 147352635360. Its totient is φ = 24057572736.

The previous prime is 72924517933. The next prime is 72924517973. The reversal of 72924517938 is 83971542927.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72924517931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62649348 + ... + 62650511.

It is an arithmetic number, because the mean of its divisors is an integer number (9209539710).

Almost surely, 2^72924517938 is an apocalyptic number.

72924517938 is an abundant number, since it is smaller than the sum of its proper divisors (74428117422).

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

72924517938 is a wasteful number, since it uses less digits than its factorization.

72924517938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125299961.

The product of its digits is 7620480, while the sum is 57.

The spelling of 72924517938 in words is "seventy-two billion, nine hundred twenty-four million, five hundred seventeen thousand, nine hundred thirty-eight".