72927168715857 has 8 divisors (see below), whose sum is σ = 97237898816800. Its totient is φ = 48617275546080.

The previous prime is 72927168715853. The next prime is 72927168715859. The reversal of 72927168715857 is 75851786172927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72927168715857 - 2² = 72927168715853 is a prime.

It is a super-2 number, since 2×72927168715857² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72927168715853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209029444 + ... + 209378037.

It is an arithmetic number, because the mean of its divisors is an integer number (12154737352100).

Almost surely, 2^{72927168715857} is an apocalyptic number.

It is an amenable number.

72927168715857 is a deficient number, since it is larger than the sum of its proper divisors (24310730100943).

72927168715857 is a wasteful number, since it uses less digits than its factorization.

72927168715857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418465583.

The product of its digits is 829785600, while the sum is 75.

The spelling of 72927168715857 in words is "seventy-two trillion, nine hundred twenty-seven billion, one hundred sixty-eight million, seven hundred fifteen thousand, eight hundred fifty-seven".