161346263203 has 4 divisors (see below), whose sum is σ = 170837219880. Its totient is φ = 151855306528.

The previous prime is 161346263189. The next prime is 161346263209. The reversal of 161346263203 is 302362643161.

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 161346263203 - 2⁹ = 161346262691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161346263209) 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, 4745478313 + ... + 4745478346.

It is an arithmetic number, because the mean of its divisors is an integer number (42709304970).

Almost surely, 2^161346263203 is an apocalyptic number.

161346263203 is a deficient number, since it is larger than the sum of its proper divisors (9490956677).

161346263203 is an equidigital number, since it uses as much as digits as its factorization.

161346263203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490956676.

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 161346263203 in words is "one hundred sixty-one billion, three hundred forty-six million, two hundred sixty-three thousand, two hundred three".