165016844513 has 2 divisors, whose sum is σ = 165016844514. Its totient is φ = 165016844512.

The previous prime is 165016844507. The next prime is 165016844563. The reversal of 165016844513 is 315448610561.

It is a happy number.

165016844513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125991632209 + 39025212304 = 354953^2 + 197548^2 .

It is a cyclic number.

It is not a de Polignac number, because 165016844513 - 2⁶ = 165016844449 is a prime.

It is not a weakly prime, because it can be changed into another prime (165016844563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82508422256 + 82508422257.

It is an arithmetic number, because the mean of its divisors is an integer number (82508422257).

Almost surely, 2^165016844513 is an apocalyptic number.

It is an amenable number.

165016844513 is a deficient number, since it is larger than the sum of its proper divisors (1).

165016844513 is an equidigital number, since it uses as much as digits as its factorization.

165016844513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 165016844513 in words is "one hundred sixty-five billion, sixteen million, eight hundred forty-four thousand, five hundred thirteen".