12779378160 has 40 divisors (see below), whose sum is σ = 39616073040. Its totient is φ = 3407834112.

The previous prime is 12779378137. The next prime is 12779378189. The reversal of 12779378160 is 6187397721.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26623465 + ... + 26623944.

It is an arithmetic number, because the mean of its divisors is an integer number (990401826).

Almost surely, 2^12779378160 is an apocalyptic number.

12779378160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12779378160 is an abundant number, since it is smaller than the sum of its proper divisors (26836694880).

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

12779378160 is a wasteful number, since it uses less digits than its factorization.

12779378160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53247425 (or 53247419 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 12779378160 in words is "twelve billion, seven hundred seventy-nine million, three hundred seventy-eight thousand, one hundred sixty".