2115565165069 has 2 divisors, whose sum is σ = 2115565165070. Its totient is φ = 2115565165068.

The previous prime is 2115565165039. The next prime is 2115565165139. The reversal of 2115565165069 is 9605615655112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135439424900 + 980125740169 = 1065570^2 + 990013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115565165069 - 2⁵ = 2115565165037 is a prime.

It is a super-2 number, since 2×2115565165069² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115565165039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057782582534 + 1057782582535.

It is an arithmetic number, because the mean of its divisors is an integer number (1057782582535).

Almost surely, 2^{2115565165069} is an apocalyptic number.

It is an amenable number.

2115565165069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115565165069 is an equidigital number, since it uses as much as digits as its factorization.

2115565165069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 52.

The spelling of 2115565165069 in words is "two trillion, one hundred fifteen billion, five hundred sixty-five million, one hundred sixty-five thousand, sixty-nine".