11544043631 has 2 divisors, whose sum is σ = 11544043632. Its totient is φ = 11544043630.

The previous prime is 11544043627. The next prime is 11544043639. The reversal of 11544043631 is 13634044511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11544043631 - 2² = 11544043627 is a prime.

It is a super-2 number, since 2×11544043631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11544043639) 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, 5772021815 + 5772021816.

It is an arithmetic number, because the mean of its divisors is an integer number (5772021816).

Almost surely, 2^11544043631 is an apocalyptic number.

11544043631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11544043631 is an equidigital number, since it uses as much as digits as its factorization.

11544043631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 11544043631 in words is "eleven billion, five hundred forty-four million, forty-three thousand, six hundred thirty-one".