72885316737 has 4 divisors (see below), whose sum is σ = 97180422320. Its totient is φ = 48590211156.

The previous prime is 72885316733. The next prime is 72885316753. The reversal of 72885316737 is 73761358827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72885316737 - 2² = 72885316733 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72885316733) 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, 12147552787 + ... + 12147552792.

It is an arithmetic number, because the mean of its divisors is an integer number (24295105580).

Almost surely, 2^72885316737 is an apocalyptic number.

It is an amenable number.

72885316737 is a deficient number, since it is larger than the sum of its proper divisors (24295105583).

72885316737 is a wasteful number, since it uses less digits than its factorization.

72885316737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24295105582.

The product of its digits is 11854080, while the sum is 57.

The spelling of 72885316737 in words is "seventy-two billion, eight hundred eighty-five million, three hundred sixteen thousand, seven hundred thirty-seven".