73521237904 has 45 divisors (see below), whose sum is σ = 145299400113. Its totient is φ = 36038822976.

The previous prime is 73521237859. The next prime is 73521237919. The reversal of 73521237904 is 40973212537.

The square root of 73521237904 is 271148.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 53001248400 + 20519989504 = 230220^2 + 143248^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 57482737 + ... + 57484015.

Almost surely, 2^73521237904 is an apocalyptic number.

73521237904 is the 271148-th square number.

It is an amenable number.

73521237904 is a deficient number, since it is larger than the sum of its proper divisors (71778162209).

73521237904 is an frugal number, since it uses more digits than its factorization.

73521237904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 73521237904 in words is "seventy-three billion, five hundred twenty-one million, two hundred thirty-seven thousand, nine hundred four".