72406670213707 has 2 divisors, whose sum is σ = 72406670213708. Its totient is φ = 72406670213706.

The previous prime is 72406670213693. The next prime is 72406670213821. The reversal of 72406670213707 is 70731207660427.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70731207660427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72406670213707 - 2¹⁵ = 72406670180939 is a prime.

It is not a weakly prime, because it can be changed into another prime (72406670223707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36203335106853 + 36203335106854.

It is an arithmetic number, because the mean of its divisors is an integer number (36203335106854).

Almost surely, 2^{72406670213707} is an apocalyptic number.

72406670213707 is a deficient number, since it is larger than the sum of its proper divisors (1).

72406670213707 is an equidigital number, since it uses as much as digits as its factorization.

72406670213707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4148928, while the sum is 52.

The spelling of 72406670213707 in words is "seventy-two trillion, four hundred six billion, six hundred seventy million, two hundred thirteen thousand, seven hundred seven".