12656008140 has 24 divisors (see below), whose sum is σ = 35436822960. Its totient is φ = 3374935488.

The previous prime is 12656008133. The next prime is 12656008147. The reversal of 12656008140 is 4180065621.

It is an interprime number because it is at equal distance from previous prime (12656008133) and next prime (12656008147).

It is not an unprimeable number, because it can be changed into a prime (12656008147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105466675 + ... + 105466794.

It is an arithmetic number, because the mean of its divisors is an integer number (1476534290).

Almost surely, 2^12656008140 is an apocalyptic number.

12656008140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12656008140 is an abundant number, since it is smaller than the sum of its proper divisors (22780814820).

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

12656008140 is a wasteful number, since it uses less digits than its factorization.

12656008140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210933481 (or 210933479 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 12656008140 in words is "twelve billion, six hundred fifty-six million, eight thousand, one hundred forty".