79728316660272 has 160 divisors (see below), whose sum is σ = 249987718761984. Its totient is φ = 21374774784000.

The previous prime is 79728316660247. The next prime is 79728316660277. The reversal of 79728316660272 is 27206661382797.

It is a super-2 number, since 2×79728316660272² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79728316660277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19193979 + ... + 22975322.

Almost surely, 2^{79728316660272} is an apocalyptic number.

It is an amenable number.

79728316660272 is an abundant number, since it is smaller than the sum of its proper divisors (170259402101712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79728316660272 is a wasteful number, since it uses less digits than its factorization.

79728316660272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42169667 (or 42169661 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 66.

The spelling of 79728316660272 in words is "seventy-nine trillion, seven hundred twenty-eight billion, three hundred sixteen million, six hundred sixty thousand, two hundred seventy-two".