23643423043 has 2 divisors, whose sum is σ = 23643423044. Its totient is φ = 23643423042.

The previous prime is 23643423017. The next prime is 23643423101. The reversal of 23643423043 is 34032434632.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23643423043 is a prime.

It is a super-2 number, since 2×23643423043² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23643423143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821711521 + 11821711522.

It is an arithmetic number, because the mean of its divisors is an integer number (11821711522).

Almost surely, 2^23643423043 is an apocalyptic number.

23643423043 is a deficient number, since it is larger than the sum of its proper divisors (1).

23643423043 is an equidigital number, since it uses as much as digits as its factorization.

23643423043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 34.

Adding to 23643423043 its reverse (34032434632), we get a palindrome (57675857675).

The spelling of 23643423043 in words is "twenty-three billion, six hundred forty-three million, four hundred twenty-three thousand, forty-three".