79942577193 has 6 divisors (see below), whose sum is σ = 115472611514. Its totient is φ = 53295051456.

The previous prime is 79942577173. The next prime is 79942577219. The reversal of 79942577193 is 39177524997.

79942577193 is a `hidden beast` number, since 7 + 9 + 9 + 42 + 577 + 19 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51759890064 + 28182687129 = 227508^2 + 167877^2 .

It is not a de Polignac number, because 79942577193 - 2¹⁰ = 79942576169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79942577193.

It is not an unprimeable number, because it can be changed into a prime (79942577173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4441254280 + ... + 4441254297.

Almost surely, 2^79942577193 is an apocalyptic number.

It is an amenable number.

79942577193 is a deficient number, since it is larger than the sum of its proper divisors (35530034321).

79942577193 is a wasteful number, since it uses less digits than its factorization.

79942577193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882508583 (or 8882508580 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 79942577193 in words is "seventy-nine billion, nine hundred forty-two million, five hundred seventy-seven thousand, one hundred ninety-three".