2115565165139 has 2 divisors, whose sum is σ = 2115565165140. Its totient is φ = 2115565165138.

The previous prime is 2115565165069. The next prime is 2115565165193. The reversal of 2115565165139 is 9315615655112.

Together with next prime (2115565165193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115565165139 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115565165039) 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, 1057782582569 + 1057782582570.

It is an arithmetic number, because the mean of its divisors is an integer number (1057782582570).

Almost surely, 2^{2115565165139} is an apocalyptic number.

2115565165139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115565165139 is an equidigital number, since it uses as much as digits as its factorization.

2115565165139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215000, while the sum is 50.

The spelling of 2115565165139 in words is "two trillion, one hundred fifteen billion, five hundred sixty-five million, one hundred sixty-five thousand, one hundred thirty-nine".