79779378242 has 16 divisors (see below), whose sum is σ = 120514977792. Its totient is φ = 39608072400.

The previous prime is 79779378241. The next prime is 79779378299. The reversal of 79779378242 is 24287397797.

It is not an unprimeable number, because it can be changed into a prime (79779378241) 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, 368063 + ... + 543165.

It is an arithmetic number, because the mean of its divisors is an integer number (7532186112).

Almost surely, 2^79779378242 is an apocalyptic number.

79779378242 is a deficient number, since it is larger than the sum of its proper divisors (40735599550).

79779378242 is a wasteful number, since it uses less digits than its factorization.

79779378242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176713.

The product of its digits is 74680704, while the sum is 65.

The spelling of 79779378242 in words is "seventy-nine billion, seven hundred seventy-nine million, three hundred seventy-eight thousand, two hundred forty-two".