11544241921 has 2 divisors, whose sum is σ = 11544241922. Its totient is φ = 11544241920.

The previous prime is 11544241897. The next prime is 11544241963. The reversal of 11544241921 is 12914244511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5904231921 + 5640010000 = 76839^2 + 75100^2 .

It is a cyclic number.

It is not a de Polignac number, because 11544241921 - 2⁵ = 11544241889 is a prime.

It is not a weakly prime, because it can be changed into another prime (11544251921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5772120960 + 5772120961.

It is an arithmetic number, because the mean of its divisors is an integer number (5772120961).

Almost surely, 2^11544241921 is an apocalyptic number.

It is an amenable number.

11544241921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11544241921 is an equidigital number, since it uses as much as digits as its factorization.

11544241921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The spelling of 11544241921 in words is "eleven billion, five hundred forty-four million, two hundred forty-one thousand, nine hundred twenty-one".