165145660204003 has 4 divisors (see below), whose sum is σ = 168659397655200. Its totient is φ = 161631922752808.

The previous prime is 165145660203919. The next prime is 165145660204127. The reversal of 165145660204003 is 300402066541561.

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 165145660204003 - 2¹³ = 165145660195811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165145660504003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756868725528 + ... + 1756868725621.

It is an arithmetic number, because the mean of its divisors is an integer number (42164849413800).

Almost surely, 2^{165145660204003} is an apocalyptic number.

165145660204003 is a deficient number, since it is larger than the sum of its proper divisors (3513737451197).

165145660204003 is an equidigital number, since it uses as much as digits as its factorization.

165145660204003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513737451196.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 165145660204003 in words is "one hundred sixty-five trillion, one hundred forty-five billion, six hundred sixty million, two hundred four thousand, three".