11131578255 has 32 divisors (see below), whose sum is σ = 20371046400. Its totient is φ = 5084681472.

The previous prime is 11131578251. The next prime is 11131578281. The reversal of 11131578255 is 55287513111.

It is not a de Polignac number, because 11131578255 - 2² = 11131578251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131578251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92851 + ... + 175739.

It is an arithmetic number, because the mean of its divisors is an integer number (636595200).

Almost surely, 2^11131578255 is an apocalyptic number.

11131578255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11131578255 is a deficient number, since it is larger than the sum of its proper divisors (9239468145).

11131578255 is a wasteful number, since it uses less digits than its factorization.

11131578255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84183.

The product of its digits is 42000, while the sum is 39.

The spelling of 11131578255 in words is "eleven billion, one hundred thirty-one million, five hundred seventy-eight thousand, two hundred fifty-five".