779397795420 has 48 divisors (see below), whose sum is σ = 2182520204928. Its totient is φ = 207819757120.

The previous prime is 779397795413. The next prime is 779397795427. The reversal of 779397795420 is 24597793977.

It is an interprime number because it is at equal distance from previous prime (779397795413) and next prime (779397795427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779397795427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31135 + ... + 1248905.

It is an arithmetic number, because the mean of its divisors is an integer number (45469170936).

Almost surely, 2^779397795420 is an apocalyptic number.

It is an amenable number.

779397795420 is an abundant number, since it is smaller than the sum of its proper divisors (1403122409508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

779397795420 is a wasteful number, since it uses less digits than its factorization.

779397795420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228450 (or 1228448 counting only the distinct ones).

The product of its (nonzero) digits is 210039480, while the sum is 69.

The spelling of 779397795420 in words is "seven hundred seventy-nine billion, three hundred ninety-seven million, seven hundred ninety-five thousand, four hundred twenty".