23834668139 has 2 divisors, whose sum is σ = 23834668140. Its totient is φ = 23834668138.

The previous prime is 23834668133. The next prime is 23834668141. The reversal of 23834668139 is 93186643832.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23834668139 is a prime.

It is a Sophie Germain prime.

Together with 23834668141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23834668133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11917334069 + 11917334070.

It is an arithmetic number, because the mean of its divisors is an integer number (11917334070).

Almost surely, 2^23834668139 is an apocalyptic number.

23834668139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23834668139 is an equidigital number, since it uses as much as digits as its factorization.

23834668139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 53.

The spelling of 23834668139 in words is "twenty-three billion, eight hundred thirty-four million, six hundred sixty-eight thousand, one hundred thirty-nine".