161234134203 has 4 divisors (see below), whose sum is σ = 214978845608. Its totient is φ = 107489422800.

The previous prime is 161234134189. The next prime is 161234134207. The reversal of 161234134203 is 302431432161.

161234134203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161234134203 - 2⁹ = 161234133691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161234134207) 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 3 ways as a sum of consecutive naturals, for example, 26872355698 + ... + 26872355703.

It is an arithmetic number, because the mean of its divisors is an integer number (53744711402).

Almost surely, 2^161234134203 is an apocalyptic number.

161234134203 is a deficient number, since it is larger than the sum of its proper divisors (53744711405).

161234134203 is an equidigital number, since it uses as much as digits as its factorization.

161234134203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53744711404.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 161234134203 its reverse (302431432161), we get a palindrome (463665566364).

The spelling of 161234134203 in words is "one hundred sixty-one billion, two hundred thirty-four million, one hundred thirty-four thousand, two hundred three".