72701565607 has 4 divisors (see below), whose sum is σ = 79310798856. Its totient is φ = 66092332360.

The previous prime is 72701565593. The next prime is 72701565617. The reversal of 72701565607 is 70656510727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72701565607 - 2⁷ = 72701565479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72701565617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3304616608 + ... + 3304616629.

It is an arithmetic number, because the mean of its divisors is an integer number (19827699714).

Almost surely, 2^72701565607 is an apocalyptic number.

72701565607 is a deficient number, since it is larger than the sum of its proper divisors (6609233249).

72701565607 is a wasteful number, since it uses less digits than its factorization.

72701565607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609233248.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 72701565607 in words is "seventy-two billion, seven hundred one million, five hundred sixty-five thousand, six hundred seven".