11543444255 has 24 divisors (see below), whose sum is σ = 16417756512. Its totient is φ = 7766146752.

The previous prime is 11543444197. The next prime is 11543444279. The reversal of 11543444255 is 55244434511.

It is not a de Polignac number, because 11543444255 - 2¹² = 11543440159 is a prime.

It is a super-2 number, since 2×11543444255² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431507 + ... + 457476.

It is an arithmetic number, because the mean of its divisors is an integer number (684073188).

Almost surely, 2^11543444255 is an apocalyptic number.

11543444255 is a deficient number, since it is larger than the sum of its proper divisors (4874312257).

11543444255 is an equidigital number, since it uses as much as digits as its factorization.

11543444255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889055 (or 889048 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

Adding to 11543444255 its reverse (55244434511), we get a palindrome (66787878766).

The spelling of 11543444255 in words is "eleven billion, five hundred forty-three million, four hundred forty-four thousand, two hundred fifty-five".