12555956613 has 8 divisors (see below), whose sum is σ = 17130607648. Its totient is φ = 8175971664.

The previous prime is 12555956489. The next prime is 12555956627. The reversal of 12555956613 is 31665955521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12555956613 - 2¹⁰ = 12555955589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555956683) 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, 48666370 + ... + 48666627.

It is an arithmetic number, because the mean of its divisors is an integer number (2141325956).

Almost surely, 2^12555956613 is an apocalyptic number.

It is an amenable number.

12555956613 is a deficient number, since it is larger than the sum of its proper divisors (4574651035).

12555956613 is an equidigital number, since it uses as much as digits as its factorization.

12555956613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97333043.

The product of its digits is 1215000, while the sum is 48.

The spelling of 12555956613 in words is "twelve billion, five hundred fifty-five million, nine hundred fifty-six thousand, six hundred thirteen".