23144621189 has 2 divisors, whose sum is σ = 23144621190. Its totient is φ = 23144621188.

The previous prime is 23144621179. The next prime is 23144621207. The reversal of 23144621189 is 98112644132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20346740164 + 2797881025 = 142642^2 + 52895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23144621189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23144621179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572310594 + 11572310595.

It is an arithmetic number, because the mean of its divisors is an integer number (11572310595).

Almost surely, 2^23144621189 is an apocalyptic number.

It is an amenable number.

23144621189 is a deficient number, since it is larger than the sum of its proper divisors (1).

23144621189 is an equidigital number, since it uses as much as digits as its factorization.

23144621189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The spelling of 23144621189 in words is "twenty-three billion, one hundred forty-four million, six hundred twenty-one thousand, one hundred eighty-nine".