168252544403 has 4 divisors (see below), whose sum is σ = 170143022520. Its totient is φ = 166362066288.

The previous prime is 168252544363. The next prime is 168252544409. The reversal of 168252544403 is 304445252861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168252544403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168252544409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945238925 + ... + 945239102.

It is an arithmetic number, because the mean of its divisors is an integer number (42535755630).

Almost surely, 2^168252544403 is an apocalyptic number.

168252544403 is a deficient number, since it is larger than the sum of its proper divisors (1890478117).

168252544403 is an equidigital number, since it uses as much as digits as its factorization.

168252544403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890478116.

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 168252544403 in words is "one hundred sixty-eight billion, two hundred fifty-two million, five hundred forty-four thousand, four hundred three".