12642130556 has 24 divisors (see below), whose sum is σ = 24141680640. Its totient is φ = 5744826800.

The previous prime is 12642130519. The next prime is 12642130561. The reversal of 12642130556 is 65503124621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128261 + ... + 204291.

It is an arithmetic number, because the mean of its divisors is an integer number (1005903360).

Almost surely, 2^12642130556 is an apocalyptic number.

It is an amenable number.

12642130556 is a deficient number, since it is larger than the sum of its proper divisors (11499550084).

12642130556 is a wasteful number, since it uses less digits than its factorization.

12642130556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79825 (or 79823 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 12642130556 in words is "twelve billion, six hundred forty-two million, one hundred thirty thousand, five hundred fifty-six".