12686561352560 has 80 divisors (see below), whose sum is σ = 29638109039616. Its totient is φ = 5050270727424.

The previous prime is 12686561352547. The next prime is 12686561352601. The reversal of 12686561352560 is 6525316568621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 12686561352496 and 12686561352505.

It is a congruent number.

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, 15491129 + ... + 16289511.

Almost surely, 2^{12686561352560} is an apocalyptic number.

12686561352560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12686561352560 is an abundant number, since it is smaller than the sum of its proper divisors (16951547687056).

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

12686561352560 is a wasteful number, since it uses less digits than its factorization.

12686561352560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799350 (or 799344 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 56.

The spelling of 12686561352560 in words is "twelve trillion, six hundred eighty-six billion, five hundred sixty-one million, three hundred fifty-two thousand, five hundred sixty".