23844644861 has 2 divisors, whose sum is σ = 23844644862. Its totient is φ = 23844644860.

The previous prime is 23844644819. The next prime is 23844644867. The reversal of 23844644861 is 16844644832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21434424025 + 2410220836 = 146405^2 + 49094^2 .

It is a cyclic number.

It is not a de Polignac number, because 23844644861 - 2¹⁴ = 23844628477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23844644867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11922322430 + 11922322431.

It is an arithmetic number, because the mean of its divisors is an integer number (11922322431).

Almost surely, 2^23844644861 is an apocalyptic number.

It is an amenable number.

23844644861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23844644861 is an equidigital number, since it uses as much as digits as its factorization.

23844644861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3538944, while the sum is 50.

The spelling of 23844644861 in words is "twenty-three billion, eight hundred forty-four million, six hundred forty-four thousand, eight hundred sixty-one".