165106892803 has 4 divisors (see below), whose sum is σ = 166962026520. Its totient is φ = 163251759088.

The previous prime is 165106892791. The next prime is 165106892807. The reversal of 165106892803 is 308298601561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165106892803 - 2²⁵ = 165073338371 is a prime.

It is a super-2 number, since 2×165106892803² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165106892807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927566725 + ... + 927566902.

It is an arithmetic number, because the mean of its divisors is an integer number (41740506630).

Almost surely, 2^165106892803 is an apocalyptic number.

165106892803 is a deficient number, since it is larger than the sum of its proper divisors (1855133717).

165106892803 is an equidigital number, since it uses as much as digits as its factorization.

165106892803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855133716.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 165106892803 in words is "one hundred sixty-five billion, one hundred six million, eight hundred ninety-two thousand, eight hundred three".