239999999999911 has 2 divisors, whose sum is σ = 239999999999912. Its totient is φ = 239999999999910.

The previous prime is 239999999999909. The next prime is 240000000000017. The reversal of 239999999999911 is 119999999999932.

It is an a-pointer prime, because the next prime (240000000000017) can be obtained adding 239999999999911 to its sum of digits (106).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239999999999911 - 2¹ = 239999999999909 is a prime.

Together with 239999999999909, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 239999999999795 and 239999999999804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239999999990911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119999999999955 + 119999999999956.

It is an arithmetic number, because the mean of its divisors is an integer number (119999999999956).

Almost surely, 2^{239999999999911} is an apocalyptic number.

239999999999911 is a deficient number, since it is larger than the sum of its proper divisors (1).

239999999999911 is an equidigital number, since it uses as much as digits as its factorization.

239999999999911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188286357654, while the sum is 106.

The spelling of 239999999999911 in words is "two hundred thirty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eleven".