161873300303 has 32 divisors (see below), whose sum is σ = 193152859200. Its totient is φ = 133722547200.

The previous prime is 161873300299. The next prime is 161873300333. The reversal of 161873300303 is 303003378161.

161873300303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161873300303 - 2² = 161873300299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161873300333) 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 in 31 ways as a sum of consecutive naturals, for example, 2886713 + ... + 2942253.

It is an arithmetic number, because the mean of its divisors is an integer number (6036026850).

Almost surely, 2^161873300303 is an apocalyptic number.

161873300303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161873300303 is a deficient number, since it is larger than the sum of its proper divisors (31279558897).

161873300303 is a wasteful number, since it uses less digits than its factorization.

161873300303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55883.

The product of its (nonzero) digits is 27216, while the sum is 35.

Adding to 161873300303 its reverse (303003378161), we get a palindrome (464876678464).

The spelling of 161873300303 in words is "one hundred sixty-one billion, eight hundred seventy-three million, three hundred thousand, three hundred three".