12555112555 has 8 divisors (see below), whose sum is σ = 15066954144. Its totient is φ = 10043544000.

The previous prime is 12555112489. The next prime is 12555112573. The reversal of 12555112555 is 55521155521.

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

It is a de Polignac number, because none of the positive numbers 2^k-12555112555 is a prime.

It is a Duffinian 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, 52255 + ... + 166855.

It is an arithmetic number, because the mean of its divisors is an integer number (1883369268).

Almost surely, 2^12555112555 is an apocalyptic number.

12555112555 is a deficient number, since it is larger than the sum of its proper divisors (2511841589).

12555112555 is a wasteful number, since it uses less digits than its factorization.

12555112555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136517.

The product of its digits is 62500, while the sum is 37.

The spelling of 12555112555 in words is "twelve billion, five hundred fifty-five million, one hundred twelve thousand, five hundred fifty-five".