165153072061 has 2 divisors, whose sum is σ = 165153072062. Its totient is φ = 165153072060.

The previous prime is 165153072059. The next prime is 165153072079. The reversal of 165153072061 is 160270351561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129172672836 + 35980399225 = 359406^2 + 189685^2 .

It is a cyclic number.

It is not a de Polignac number, because 165153072061 - 2¹ = 165153072059 is a prime.

It is a super-2 number, since 2×165153072061² (a number of 23 digits) contains 22 as substring.

Together with 165153072059, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 165153072061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165153072011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82576536030 + 82576536031.

It is an arithmetic number, because the mean of its divisors is an integer number (82576536031).

Almost surely, 2^165153072061 is an apocalyptic number.

It is an amenable number.

165153072061 is a deficient number, since it is larger than the sum of its proper divisors (1).

165153072061 is an equidigital number, since it uses as much as digits as its factorization.

165153072061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 165153072061 in words is "one hundred sixty-five billion, one hundred fifty-three million, seventy-two thousand, sixty-one".