79942577194 has 8 divisors (see below), whose sum is σ = 119915590788. Its totient is φ = 39970713600.

The previous prime is 79942577173. The next prime is 79942577219. The reversal of 79942577194 is 49177524997.

It can be written as a sum of positive squares in 2 ways, for example, as 75578257225 + 4364319969 = 274915^2 + 66063^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 85257 + ... + 408844.

Almost surely, 2^79942577194 is an apocalyptic number.

79942577194 is a deficient number, since it is larger than the sum of its proper divisors (39973013594).

79942577194 is a wasteful number, since it uses less digits than its factorization.

79942577194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575000.

The product of its digits is 40007520, while the sum is 64.

The spelling of 79942577194 in words is "seventy-nine billion, nine hundred forty-two million, five hundred seventy-seven thousand, one hundred ninety-four".