11513214544 has 40 divisors (see below), whose sum is σ = 24029255432. Its totient is φ = 5312355840.

The previous prime is 11513214533. The next prime is 11513214553. The reversal of 11513214544 is 44541231511.

It can be written as a sum of positive squares in 4 ways, for example, as 6207548944 + 5305665600 = 78788^2 + 72840^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1396354 + ... + 1404574.

Almost surely, 2^11513214544 is an apocalyptic number.

It is an amenable number.

11513214544 is an abundant number, since it is smaller than the sum of its proper divisors (12516040888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11513214544 is a wasteful number, since it uses less digits than its factorization.

11513214544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14975 (or 14969 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The spelling of 11513214544 in words is "eleven billion, five hundred thirteen million, two hundred fourteen thousand, five hundred forty-four".