165673928609699 has 8 divisors (see below), whose sum is σ = 165734491991232. Its totient is φ = 165613366273320.

The previous prime is 165673928609689. The next prime is 165673928609737. The reversal of 165673928609699 is 996906829376561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165673928609699 - 2²⁰ = 165673927561123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165673928609699.

It is not an unprimeable number, because it can be changed into a prime (165673928609669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470848664 + ... + 471200394.

It is an arithmetic number, because the mean of its divisors is an integer number (20716811498904).

Almost surely, 2^{165673928609699} is an apocalyptic number.

165673928609699 is a deficient number, since it is larger than the sum of its proper divisors (60563381533).

165673928609699 is a wasteful number, since it uses less digits than its factorization.

165673928609699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522577.

The product of its (nonzero) digits is 14285134080, while the sum is 86.

The spelling of 165673928609699 in words is "one hundred sixty-five trillion, six hundred seventy-three billion, nine hundred twenty-eight million, six hundred nine thousand, six hundred ninety-nine".