779585986123 has 4 divisors (see below), whose sum is σ = 890955412720. Its totient is φ = 668216559528.

The previous prime is 779585986099. The next prime is 779585986183. The reversal of 779585986123 is 321689585977.

779585986123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321689585977 = 98257 ⋅3273961.

It is not a de Polignac number, because 779585986123 - 2¹⁷ = 779585855051 is a prime.

It is a super-2 number, since 2×779585986123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (779585986183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55684713288 + ... + 55684713301.

It is an arithmetic number, because the mean of its divisors is an integer number (222738853180).

Almost surely, 2^779585986123 is an apocalyptic number.

779585986123 is a deficient number, since it is larger than the sum of its proper divisors (111369426597).

779585986123 is a wasteful number, since it uses less digits than its factorization.

779585986123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111369426596.

The product of its digits is 228614400, while the sum is 70.

The spelling of 779585986123 in words is "seven hundred seventy-nine billion, five hundred eighty-five million, nine hundred eighty-six thousand, one hundred twenty-three".