165156550556059 has 2 divisors, whose sum is σ = 165156550556060. Its totient is φ = 165156550556058.

The previous prime is 165156550556057. The next prime is 165156550556089. The reversal of 165156550556059 is 950655055651561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165156550556059 - 2¹ = 165156550556057 is a prime.

It is a super-2 number, since 2×165156550556059² (a number of 29 digits) contains 22 as substring.

Together with 165156550556057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (165156550556057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82578275278029 + 82578275278030.

It is an arithmetic number, because the mean of its divisors is an integer number (82578275278030).

Almost surely, 2^{165156550556059} is an apocalyptic number.

165156550556059 is a deficient number, since it is larger than the sum of its proper divisors (1).

165156550556059 is an equidigital number, since it uses as much as digits as its factorization.

165156550556059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151875000, while the sum is 64.

The spelling of 165156550556059 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fifty million, five hundred fifty-six thousand, fifty-nine".