11544514521 has 4 divisors (see below), whose sum is σ = 15392686032. Its totient is φ = 7696343012.

The previous prime is 11544514511. The next prime is 11544514549. The reversal of 11544514521 is 12541544511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11544514521 - 2⁵ = 11544514489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11544514511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924085751 + ... + 1924085756.

It is an arithmetic number, because the mean of its divisors is an integer number (3848171508).

Almost surely, 2^11544514521 is an apocalyptic number.

It is an amenable number.

11544514521 is a deficient number, since it is larger than the sum of its proper divisors (3848171511).

11544514521 is an equidigital number, since it uses as much as digits as its factorization.

11544514521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848171510.

The product of its digits is 16000, while the sum is 33.

The spelling of 11544514521 in words is "eleven billion, five hundred forty-four million, five hundred fourteen thousand, five hundred twenty-one".