23939517587143 has 2 divisors, whose sum is σ = 23939517587144. Its totient is φ = 23939517587142.

The previous prime is 23939517587039. The next prime is 23939517587173. The reversal of 23939517587143 is 34178571593932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23939517587143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23939517587173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11969758793571 + 11969758793572.

It is an arithmetic number, because the mean of its divisors is an integer number (11969758793572).

Almost surely, 2^{23939517587143} is an apocalyptic number.

23939517587143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23939517587143 is an equidigital number, since it uses as much as digits as its factorization.

23939517587143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171460800, while the sum is 67.

The spelling of 23939517587143 in words is "twenty-three trillion, nine hundred thirty-nine billion, five hundred seventeen million, five hundred eighty-seven thousand, one hundred forty-three".