11312543172158 has 24 divisors (see below), whose sum is σ = 17247031146912. Its totient is φ = 5564436130944.

The previous prime is 11312543172149. The next prime is 11312543172163. The reversal of 11312543172158 is 85127134521311.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4365035 + ... + 6455897.

It is an arithmetic number, because the mean of its divisors is an integer number (718626297788).

Almost surely, 2^{11312543172158} is an apocalyptic number.

11312543172158 is a deficient number, since it is larger than the sum of its proper divisors (5934487974754).

11312543172158 is an equidigital number, since it uses as much as digits as its factorization.

11312543172158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091296 (or 2091129 counting only the distinct ones).

The product of its digits is 201600, while the sum is 44.

Adding to 11312543172158 its reverse (85127134521311), we get a palindrome (96439677693469).

The spelling of 11312543172158 in words is "eleven trillion, three hundred twelve billion, five hundred forty-three million, one hundred seventy-two thousand, one hundred fifty-eight".