72406670213726 has 24 divisors (see below), whose sum is σ = 111324010662360. Its totient is φ = 35320229760816.

The previous prime is 72406670213707. The next prime is 72406670213821. The reversal of 72406670213726 is 62731207660427.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8220365 + ... + 14573528.

It is an arithmetic number, because the mean of its divisors is an integer number (4638500444265).

Almost surely, 2^{72406670213726} is an apocalyptic number.

72406670213726 is a deficient number, since it is larger than the sum of its proper divisors (38917340448634).

72406670213726 is a wasteful number, since it uses less digits than its factorization.

72406670213726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794840 (or 22794797 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 72406670213726 in words is "seventy-two trillion, four hundred six billion, six hundred seventy million, two hundred thirteen thousand, seven hundred twenty-six".