12779109396480 has 1664 divisors, whose sum is σ = 51444642557952. Its totient is φ = 2641807540224.

The previous prime is 12779109396479. The next prime is 12779109396511. The reversal of 12779109396480 is 8469390197721.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26240470797 + ... + 26240471283.

Almost surely, 2^{12779109396480} is an apocalyptic number.

12779109396480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12779109396480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25722321278976).

12779109396480 is an abundant number, since it is smaller than the sum of its proper divisors (38665533161472).

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

12779109396480 is a wasteful number, since it uses less digits than its factorization.

12779109396480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 66.

The spelling of 12779109396480 in words is "twelve trillion, seven hundred seventy-nine billion, one hundred nine million, three hundred ninety-six thousand, four hundred eighty".