12560613620 has 24 divisors (see below), whose sum is σ = 26511191784. Its totient is φ = 4998740096.

The previous prime is 12560613587. The next prime is 12560613641. The reversal of 12560613620 is 2631606521.

It can be written as a sum of positive squares in 4 ways, for example, as 4235146084 + 8325467536 = 65078^2 + 91244^2 .

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, 1590047 + ... + 1597926.

It is an arithmetic number, because the mean of its divisors is an integer number (1104632991).

Almost surely, 2^12560613620 is an apocalyptic number.

12560613620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12560613620 is an abundant number, since it is smaller than the sum of its proper divisors (13950578164).

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

12560613620 is a wasteful number, since it uses less digits than its factorization.

12560613620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188179 (or 3188177 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 12560613620 in words is "twelve billion, five hundred sixty million, six hundred thirteen thousand, six hundred twenty".