23728668043 has 2 divisors, whose sum is σ = 23728668044. Its totient is φ = 23728668042.

The previous prime is 23728667939. The next prime is 23728668091. The reversal of 23728668043 is 34086682732.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23728668043 - 2¹⁷ = 23728536971 is a prime.

It is not a weakly prime, because it can be changed into another prime (23728663043) 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, 11864334021 + 11864334022.

It is an arithmetic number, because the mean of its divisors is an integer number (11864334022).

Almost surely, 2^23728668043 is an apocalyptic number.

23728668043 is a deficient number, since it is larger than the sum of its proper divisors (1).

23728668043 is an equidigital number, since it uses as much as digits as its factorization.

23728668043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 23728668043 in words is "twenty-three billion, seven hundred twenty-eight million, six hundred sixty-eight thousand, forty-three".