12517875640 has 128 divisors (see below), whose sum is σ = 31352832000. Its totient is φ = 4478284800.

The previous prime is 12517875637. The next prime is 12517875673. The reversal of 12517875640 is 4657871521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 959481 + ... + 972439.

It is an arithmetic number, because the mean of its divisors is an integer number (244944000).

Almost surely, 2^12517875640 is an apocalyptic number.

12517875640 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 12517875640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15676416000).

12517875640 is an abundant number, since it is smaller than the sum of its proper divisors (18834956360).

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

12517875640 is a wasteful number, since it uses less digits than its factorization.

12517875640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061 (or 13057 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 12517875640 in words is "twelve billion, five hundred seventeen million, eight hundred seventy-five thousand, six hundred forty".