12867496781776 has 80 divisors (see below), whose sum is σ = 30685875367168. Its totient is φ = 5090132275200.

The previous prime is 12867496781771. The next prime is 12867496781861. The reversal of 12867496781776 is 67718769476821.

It is a junction number, because it is equal to n+sod(n) for n = 12867496781696 and 12867496781705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867496781771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24773056 + ... + 25287136.

Almost surely, 2^{12867496781776} is an apocalyptic number.

12867496781776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12867496781776 is an abundant number, since it is smaller than the sum of its proper divisors (17818378585392).

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

12867496781776 is a wasteful number, since it uses less digits than its factorization.

12867496781776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531300 (or 531294 counting only the distinct ones).

The product of its digits is 2389782528, while the sum is 79.

The spelling of 12867496781776 in words is "twelve trillion, eight hundred sixty-seven billion, four hundred ninety-six million, seven hundred eighty-one thousand, seven hundred seventy-six".