165308029091 has 2 divisors, whose sum is σ = 165308029092. Its totient is φ = 165308029090.

The previous prime is 165308029037. The next prime is 165308029147. The reversal of 165308029091 is 190920803561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165308029091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (165308029891) 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, 82654014545 + 82654014546.

It is an arithmetic number, because the mean of its divisors is an integer number (82654014546).

Almost surely, 2^165308029091 is an apocalyptic number.

165308029091 is a deficient number, since it is larger than the sum of its proper divisors (1).

165308029091 is an equidigital number, since it uses as much as digits as its factorization.

165308029091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 165308029091 in words is "one hundred sixty-five billion, three hundred eight million, twenty-nine thousand, ninety-one".