12779156194980 has 288 divisors, whose sum is σ = 41733533318400. Its totient is φ = 2913242185728.

The previous prime is 12779156194927. The next prime is 12779156194999. The reversal of 12779156194980 is 8949165197721.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1896858172 + ... + 1896864908.

It is an arithmetic number, because the mean of its divisors is an integer number (144908101800).

Almost surely, 2^{12779156194980} is an apocalyptic number.

12779156194980 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 12779156194980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20866766659200).

12779156194980 is an abundant number, since it is smaller than the sum of its proper divisors (28954377123420).

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

12779156194980 is a wasteful number, since it uses less digits than its factorization.

12779156194980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371 (or 8362 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 69.

The spelling of 12779156194980 in words is "twelve trillion, seven hundred seventy-nine billion, one hundred fifty-six million, one hundred ninety-four thousand, nine hundred eighty".