165001006603 has 2 divisors, whose sum is σ = 165001006604. Its totient is φ = 165001006602.

The previous prime is 165001006601. The next prime is 165001006609. The reversal of 165001006603 is 306600100561.

165001006603 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 is a cyclic number.

It is not a de Polignac number, because 165001006603 - 2¹ = 165001006601 is a prime.

Together with 165001006601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (165001006601) 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, 82500503301 + 82500503302.

It is an arithmetic number, because the mean of its divisors is an integer number (82500503302).

Almost surely, 2^165001006603 is an apocalyptic number.

165001006603 is a deficient number, since it is larger than the sum of its proper divisors (1).

165001006603 is an equidigital number, since it uses as much as digits as its factorization.

165001006603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 165001006603 in words is "one hundred sixty-five billion, one million, six thousand, six hundred three".