11143234545 has 48 divisors (see below), whose sum is σ = 19076930880. Its totient is φ = 5552925696.

The previous prime is 11143234517. The next prime is 11143234547. The reversal of 11143234545 is 54543234111.

It is not a de Polignac number, because 11143234545 - 2¹¹ = 11143232497 is a prime.

It is a super-2 number, since 2×11143234545² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11143234547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 593319 + ... + 611811.

It is an arithmetic number, because the mean of its divisors is an integer number (397436060).

Almost surely, 2^11143234545 is an apocalyptic number.

11143234545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11143234545 is a deficient number, since it is larger than the sum of its proper divisors (7933696335).

11143234545 is a wasteful number, since it uses less digits than its factorization.

11143234545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18674 (or 18657 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

Adding to 11143234545 its reverse (54543234111), we get a palindrome (65686468656).

The spelling of 11143234545 in words is "eleven billion, one hundred forty-three million, two hundred thirty-four thousand, five hundred forty-five".