72425553566464 has 36 divisors (see below), whose sum is σ = 165220794077584. Its totient is φ = 31039522956288.

The previous prime is 72425553566407. The next prime is 72425553566467. The reversal of 72425553566464 is 46466535552427.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 72425553566396 and 72425553566405.

It is not an unprimeable number, because it can be changed into a prime (72425553566467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20208020967 + ... + 20208024550.

Almost surely, 2^{72425553566464} is an apocalyptic number.

It is an amenable number.

72425553566464 is an abundant number, since it is smaller than the sum of its proper divisors (92795240511120).

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

72425553566464 is an equidigital number, since it uses as much as digits as its factorization.

72425553566464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40416045540 (or 40416045526 counting only the distinct ones).

The product of its digits is 725760000, while the sum is 64.

The spelling of 72425553566464 in words is "seventy-two trillion, four hundred twenty-five billion, five hundred fifty-three million, five hundred sixty-six thousand, four hundred sixty-four".