79786579269 has 4 divisors (see below), whose sum is σ = 106382105696. Its totient is φ = 53191052844.

The previous prime is 79786579253. The next prime is 79786579297. The reversal of 79786579269 is 96297568797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79786579269 - 2⁴ = 79786579253 is a prime.

It is a super-2 number, since 2×79786579269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79786579269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79786579069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13297763209 + ... + 13297763214.

It is an arithmetic number, because the mean of its divisors is an integer number (26595526424).

Almost surely, 2^79786579269 is an apocalyptic number.

It is an amenable number.

79786579269 is a deficient number, since it is larger than the sum of its proper divisors (26595526427).

79786579269 is a wasteful number, since it uses less digits than its factorization.

79786579269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26595526426.

The product of its digits is 720135360, while the sum is 75.

The spelling of 79786579269 in words is "seventy-nine billion, seven hundred eighty-six million, five hundred seventy-nine thousand, two hundred sixty-nine".