72407615460656 has 20 divisors (see below), whose sum is σ = 160331148520272. Its totient is φ = 31031835197376.

The previous prime is 72407615460647. The next prime is 72407615460737. The reversal of 72407615460656 is 65606451670427.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72407615460595 and 72407615460604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323248283195 + ... + 323248283418.

Almost surely, 2^{72407615460656} is an apocalyptic number.

It is an amenable number.

72407615460656 is an abundant number, since it is smaller than the sum of its proper divisors (87923533059616).

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

72407615460656 is a wasteful number, since it uses less digits than its factorization.

72407615460656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646496566628 (or 646496566622 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 59.

The spelling of 72407615460656 in words is "seventy-two trillion, four hundred seven billion, six hundred fifteen million, four hundred sixty thousand, six hundred fifty-six".