12560135620 has 24 divisors (see below), whose sum is σ = 26528756184. Its totient is φ = 4995012096.

The previous prime is 12560135597. The next prime is 12560135633. The reversal of 12560135620 is 2653106521.

12560135620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1724574784 + 10835560836 = 41528^2 + 104094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811589 + ... + 1818508.

It is an arithmetic number, because the mean of its divisors is an integer number (1105364841).

Almost surely, 2^12560135620 is an apocalyptic number.

12560135620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12560135620 is an abundant number, since it is smaller than the sum of its proper divisors (13968620564).

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

12560135620 is a wasteful number, since it uses less digits than its factorization.

12560135620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630279 (or 3630277 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 12560135620 in words is "twelve billion, five hundred sixty million, one hundred thirty-five thousand, six hundred twenty".