779220223123 has 4 divisors (see below), whose sum is σ = 784449889200. Its totient is φ = 773990557048.

The previous prime is 779220223109. The next prime is 779220223213. The reversal of 779220223123 is 321322022977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 779220223123 - 2¹³ = 779220214931 is a prime.

It is a super-2 number, since 2×779220223123² (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 (779220221123) 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, 2614832815 + ... + 2614833112.

It is an arithmetic number, because the mean of its divisors is an integer number (196112472300).

Almost surely, 2^779220223123 is an apocalyptic number.

779220223123 is a deficient number, since it is larger than the sum of its proper divisors (5229666077).

779220223123 is a wasteful number, since it uses less digits than its factorization.

779220223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229666076.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 779220223123 in words is "seven hundred seventy-nine billion, two hundred twenty million, two hundred twenty-three thousand, one hundred twenty-three".