12560171660 has 48 divisors (see below), whose sum is σ = 27622800576. Its totient is φ = 4788233472.

The previous prime is 12560171653. The next prime is 12560171669. The reversal of 12560171660 is 6617106521.

It is a self number, because there is not a number n which added to its sum of digits gives 12560171660.

It is not an unprimeable number, because it can be changed into a prime (12560171669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78134 + ... + 176706.

It is an arithmetic number, because the mean of its divisors is an integer number (575475012).

Almost surely, 2^12560171660 is an apocalyptic number.

12560171660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12560171660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13811400288).

12560171660 is an abundant number, since it is smaller than the sum of its proper divisors (15062628916).

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

12560171660 is a wasteful number, since it uses less digits than its factorization.

12560171660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98882 (or 98880 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 12560171660 in words is "twelve billion, five hundred sixty million, one hundred seventy-one thousand, six hundred sixty".