11544134621 has 4 divisors (see below), whose sum is σ = 11812602912. Its totient is φ = 11275666332.

The previous prime is 11544134599. The next prime is 11544134629. The reversal of 11544134621 is 12643144511.

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 11544134621 - 2⁶ = 11544134557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544134629) 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, 134234081 + ... + 134234166.

It is an arithmetic number, because the mean of its divisors is an integer number (2953150728).

Almost surely, 2^11544134621 is an apocalyptic number.

It is an amenable number.

11544134621 is a deficient number, since it is larger than the sum of its proper divisors (268468291).

11544134621 is an equidigital number, since it uses as much as digits as its factorization.

11544134621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268468290.

The product of its digits is 11520, while the sum is 32.

The spelling of 11544134621 in words is "eleven billion, five hundred forty-four million, one hundred thirty-four thousand, six hundred twenty-one".