12817860257560 has 32 divisors (see below), whose sum is σ = 28840372059600. Its totient is φ = 5127110951040.

The previous prime is 12817860257551. The next prime is 12817860257599. The reversal of 12817860257560 is 6575206871821.

It is a super-2 number, since 2×12817860257560² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12817860257495 and 12817860257504.

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, 5781406 + ... + 7685074.

Almost surely, 2^{12817860257560} is an apocalyptic number.

12817860257560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12817860257560 is an abundant number, since it is smaller than the sum of its proper divisors (16022511802040).

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

12817860257560 is a wasteful number, since it uses less digits than its factorization.

12817860257560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072011 (or 2072007 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 12817860257560 in words is "twelve trillion, eight hundred seventeen billion, eight hundred sixty million, two hundred fifty-seven thousand, five hundred sixty".