165294286081 has 2 divisors, whose sum is σ = 165294286082. Its totient is φ = 165294286080.

The previous prime is 165294286039. The next prime is 165294286103. The reversal of 165294286081 is 180682492561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128014399681 + 37279886400 = 357791^2 + 193080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165294286081 is a prime.

It is a super-2 number, since 2×165294286081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165294289081) 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, 82647143040 + 82647143041.

It is an arithmetic number, because the mean of its divisors is an integer number (82647143041).

Almost surely, 2^165294286081 is an apocalyptic number.

It is an amenable number.

165294286081 is a deficient number, since it is larger than the sum of its proper divisors (1).

165294286081 is an equidigital number, since it uses as much as digits as its factorization.

165294286081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 165294286081 in words is "one hundred sixty-five billion, two hundred ninety-four million, two hundred eighty-six thousand, eighty-one".