165111156037 has 2 divisors, whose sum is σ = 165111156038. Its totient is φ = 165111156036.

The previous prime is 165111155983. The next prime is 165111156059. The reversal of 165111156037 is 730651111561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128583919396 + 36527236641 = 358586^2 + 191121^2 .

It is a cyclic number.

It is not a de Polignac number, because 165111156037 - 2¹¹ = 165111153989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165111155987 and 165111156005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165111156737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82555578018 + 82555578019.

It is an arithmetic number, because the mean of its divisors is an integer number (82555578019).

Almost surely, 2^165111156037 is an apocalyptic number.

It is an amenable number.

165111156037 is a deficient number, since it is larger than the sum of its proper divisors (1).

165111156037 is an equidigital number, since it uses as much as digits as its factorization.

165111156037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 37.

Adding to 165111156037 its reverse (730651111561), we get a palindrome (895762267598).

The spelling of 165111156037 in words is "one hundred sixty-five billion, one hundred eleven million, one hundred fifty-six thousand, thirty-seven".