12561414560 has 48 divisors (see below), whose sum is σ = 30366506016. Its totient is φ = 4907712768.

The previous prime is 12561414553. The next prime is 12561414581. The reversal of 12561414560 is 6541416521.

It is a self number, because there is not a number n which added to its sum of digits gives 12561414560.

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, 906014 + ... + 919773.

It is an arithmetic number, because the mean of its divisors is an integer number (632635542).

Almost surely, 2^12561414560 is an apocalyptic number.

12561414560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12561414560 is an abundant number, since it is smaller than the sum of its proper divisors (17805091456).

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

12561414560 is a wasteful number, since it uses less digits than its factorization.

12561414560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825845 (or 1825837 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 12561414560 in words is "twelve billion, five hundred sixty-one million, four hundred fourteen thousand, five hundred sixty".