779416478448 has 160 divisors (see below), whose sum is σ = 2232339264000. Its totient is φ = 233889762304.

The previous prime is 779416478441. The next prime is 779416478509. The reversal of 779416478448 is 844874614977.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779416478441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5352103 + ... + 5495801.

It is an arithmetic number, because the mean of its divisors is an integer number (13952120400).

Almost surely, 2^779416478448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779416478448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116169632000).

779416478448 is an abundant number, since it is smaller than the sum of its proper divisors (1452922785552).

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

779416478448 is a wasteful number, since it uses less digits than its factorization.

779416478448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143784 (or 143744 counting only the distinct ones).

The product of its digits is 303464448, while the sum is 69.

The spelling of 779416478448 in words is "seven hundred seventy-nine billion, four hundred sixteen million, four hundred seventy-eight thousand, four hundred forty-eight".