11944561544189 has 4 divisors (see below), whose sum is σ = 11944792547040. Its totient is φ = 11944330541340.

The previous prime is 11944561544183. The next prime is 11944561544203. The reversal of 11944561544189 is 98144516544911.

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 11944561544189 - 2⁴ = 11944561544173 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 (11944561544183) 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, 115423847 + ... + 115527284.

It is an arithmetic number, because the mean of its divisors is an integer number (2986198136760).

Almost surely, 2^{11944561544189} is an apocalyptic number.

It is an amenable number.

11944561544189 is a deficient number, since it is larger than the sum of its proper divisors (231002851).

11944561544189 is an equidigital number, since it uses as much as digits as its factorization.

11944561544189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231002850.

The product of its digits is 24883200, while the sum is 62.

The spelling of 11944561544189 in words is "eleven trillion, nine hundred forty-four billion, five hundred sixty-one million, five hundred forty-four thousand, one hundred eighty-nine".