79486860769 has 4 divisors (see below), whose sum is σ = 79568219844. Its totient is φ = 79405501696.

The previous prime is 79486860737. The next prime is 79486860793. The reversal of 79486860769 is 96706868497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96706868497 = 1051 ⋅92014147.

It can be written as a sum of positive squares in 2 ways, for example, as 47311470144 + 32175390625 = 217512^2 + 179375^2 .

It is a cyclic number.

It is not a de Polignac number, because 79486860769 - 2⁵ = 79486860737 is a prime.

It is a super-2 number, since 2×79486860769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79486860698 and 79486860707.

It is not an unprimeable number, because it can be changed into a prime (79486869769) 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, 40678072 + ... + 40680025.

It is an arithmetic number, because the mean of its divisors is an integer number (19892054961).

Almost surely, 2^79486860769 is an apocalyptic number.

It is an amenable number.

79486860769 is a deficient number, since it is larger than the sum of its proper divisors (81359075).

79486860769 is an equidigital number, since it uses as much as digits as its factorization.

79486860769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81359074.

The product of its (nonzero) digits is 219469824, while the sum is 70.

The spelling of 79486860769 in words is "seventy-nine billion, four hundred eighty-six million, eight hundred sixty thousand, seven hundred sixty-nine".