72713616465 has 32 divisors (see below), whose sum is σ = 137546945280. Its totient is φ = 32094284544.

The previous prime is 72713616421. The next prime is 72713616487. The reversal of 72713616465 is 56461631727.

It is a happy number.

It is not a de Polignac number, because 72713616465 - 2²¹ = 72711519313 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11936794 + ... + 11942883.

It is an arithmetic number, because the mean of its divisors is an integer number (4298342040).

Almost surely, 2^72713616465 is an apocalyptic number.

It is an amenable number.

72713616465 is a deficient number, since it is larger than the sum of its proper divisors (64833328815).

72713616465 is a wasteful number, since it uses less digits than its factorization.

72713616465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23879721.

The product of its digits is 1270080, while the sum is 48.

The spelling of 72713616465 in words is "seventy-two billion, seven hundred thirteen million, six hundred sixteen thousand, four hundred sixty-five".