72407615460617 has 2 divisors, whose sum is σ = 72407615460618. Its totient is φ = 72407615460616.

The previous prime is 72407615460613. The next prime is 72407615460637. The reversal of 72407615460617 is 71606451670427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56878309816441 + 15529305644176 = 7541771^2 + 3940724^2 .

It is a cyclic number.

It is not a de Polignac number, because 72407615460617 - 2² = 72407615460613 is a prime.

It is not a weakly prime, because it can be changed into another prime (72407615460613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36203807730308 + 36203807730309.

It is an arithmetic number, because the mean of its divisors is an integer number (36203807730309).

Almost surely, 2^{72407615460617} is an apocalyptic number.

It is an amenable number.

72407615460617 is a deficient number, since it is larger than the sum of its proper divisors (1).

72407615460617 is an equidigital number, since it uses as much as digits as its factorization.

72407615460617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 72407615460617 in words is "seventy-two trillion, four hundred seven billion, six hundred fifteen million, four hundred sixty thousand, six hundred seventeen".