79528425993 has 32 divisors (see below), whose sum is σ = 121911398400. Its totient is φ = 51178635648.

The previous prime is 79528425979. The next prime is 79528426001. The reversal of 79528425993 is 39952482597.

79528425993 is a `hidden beast` number, since 79 + 52 + 8 + 425 + 9 + 93 = 666.

It is not a de Polignac number, because 79528425993 - 2⁵ = 79528425961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79528425993.

It is not an unprimeable number, because it can be changed into a prime (79528425923) 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, 4299621 + ... + 4318077.

It is an arithmetic number, because the mean of its divisors is an integer number (3809731200).

Almost surely, 2^79528425993 is an apocalyptic number.

It is an amenable number.

79528425993 is a deficient number, since it is larger than the sum of its proper divisors (42382972407).

79528425993 is a wasteful number, since it uses less digits than its factorization.

79528425993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998 (or 23992 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

It can be divided in two parts, 79528 and 425993, that added together give a square (505521 = 711²).

The spelling of 79528425993 in words is "seventy-nine billion, five hundred twenty-eight million, four hundred twenty-five thousand, nine hundred ninety-three".