165053102602061 has 2 divisors, whose sum is σ = 165053102602062. Its totient is φ = 165053102602060.

The previous prime is 165053102602039. The next prime is 165053102602093. The reversal of 165053102602061 is 160206201350561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163149682276036 + 1903420326025 = 12773006^2 + 1379645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165053102602061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165053102602001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82526551301030 + 82526551301031.

It is an arithmetic number, because the mean of its divisors is an integer number (82526551301031).

Almost surely, 2^{165053102602061} is an apocalyptic number.

It is an amenable number.

165053102602061 is a deficient number, since it is larger than the sum of its proper divisors (1).

165053102602061 is an equidigital number, since it uses as much as digits as its factorization.

165053102602061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 165053102602061 in words is "one hundred sixty-five trillion, fifty-three billion, one hundred two million, six hundred two thousand, sixty-one".