72631744925476 has 81 divisors (see below), whose sum is σ = 141118171712049. Its totient is φ = 32685208195200.

The previous prime is 72631744925471. The next prime is 72631744925483. The reversal of 72631744925476 is 67452944713627.

It is a happy number.

The square root of 72631744925476 is 8522426.

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., 32375257885476 + 40256487040000 = 5689926^2 + 6344800^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72631744925471) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19311815436 + ... + 19311819196.

Almost surely, 2^{72631744925476} is an apocalyptic number.

72631744925476 is the 8522426-th square number.

It is an amenable number.

72631744925476 is a deficient number, since it is larger than the sum of its proper divisors (68486426786573).

72631744925476 is an equidigital number, since it uses as much as digits as its factorization.

72631744925476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7754 (or 3877 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 67.

The spelling of 72631744925476 in words is "seventy-two trillion, six hundred thirty-one billion, seven hundred forty-four million, nine hundred twenty-five thousand, four hundred seventy-six".