23943401855749 has 2 divisors, whose sum is σ = 23943401855750. Its totient is φ = 23943401855748.

The previous prime is 23943401855719. The next prime is 23943401855767. The reversal of 23943401855749 is 94755810434932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13093506065025 + 10849895790724 = 3618495^2 + 3293918^2 .

It is a cyclic number.

It is not a de Polignac number, because 23943401855749 - 2²⁵ = 23943368301317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23943401855719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11971700927874 + 11971700927875.

It is an arithmetic number, because the mean of its divisors is an integer number (11971700927875).

Almost surely, 2^{23943401855749} is an apocalyptic number.

It is an amenable number.

23943401855749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23943401855749 is an equidigital number, since it uses as much as digits as its factorization.

23943401855749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 23943401855749 in words is "twenty-three trillion, nine hundred forty-three billion, four hundred one million, eight hundred fifty-five thousand, seven hundred forty-nine".