12774991919776 has 96 divisors (see below), whose sum is σ = 27504364215888. Its totient is φ = 5817531432960.

The previous prime is 12774991919741. The next prime is 12774991919783. The reversal of 12774991919776 is 67791919947721.

It can be written as a sum of positive squares in 8 ways, for example, as 10458885360400 + 2316106559376 = 3234020^2 + 1521876^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12774991919696 and 12774991919705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930085 + ... + 5139556.

Almost surely, 2^{12774991919776} is an apocalyptic number.

12774991919776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12774991919776 is an abundant number, since it is smaller than the sum of its proper divisors (14729372296112).

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

12774991919776 is a wasteful number, since it uses less digits than its factorization.

12774991919776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069794 (or 6069786 counting only the distinct ones).

The product of its digits is 756142128, while the sum is 79.

The spelling of 12774991919776 in words is "twelve trillion, seven hundred seventy-four billion, nine hundred ninety-one million, nine hundred nineteen thousand, seven hundred seventy-six".