72324892978272 has 240 divisors, whose sum is σ = 236979440957952. Its totient is φ = 21450322471680.

The previous prime is 72324892978271. The next prime is 72324892978291. The reversal of 72324892978272 is 27287929842327.

72324892978272 is a `hidden beast` number, since 7 + 2 + 3 + 2 + 489 + 2 + 9 + 78 + 2 + 72 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72324892978272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72324892978271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25645548 + ... + 28325675.

Almost surely, 2^{72324892978272} is an apocalyptic number.

72324892978272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72324892978272 is an abundant number, since it is smaller than the sum of its proper divisors (164654547979680).

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

72324892978272 is a wasteful number, since it uses less digits than its factorization.

72324892978272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53971303 (or 53971286 counting only the distinct ones).

The product of its digits is 682795008, while the sum is 72.

The spelling of 72324892978272 in words is "seventy-two trillion, three hundred twenty-four billion, eight hundred ninety-two million, nine hundred seventy-eight thousand, two hundred seventy-two".