165035720011 has 2 divisors, whose sum is σ = 165035720012. Its totient is φ = 165035720010.

The previous prime is 165035719997. The next prime is 165035720123. The reversal of 165035720011 is 110027530561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165035720011 - 2⁷ = 165035719883 is a prime.

It is not a weakly prime, because it can be changed into another prime (165035730011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82517860005 + 82517860006.

It is an arithmetic number, because the mean of its divisors is an integer number (82517860006).

Almost surely, 2^165035720011 is an apocalyptic number.

165035720011 is a deficient number, since it is larger than the sum of its proper divisors (1).

165035720011 is an equidigital number, since it uses as much as digits as its factorization.

165035720011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The spelling of 165035720011 in words is "one hundred sixty-five billion, thirty-five million, seven hundred twenty thousand, eleven".