161143410227 has 16 divisors (see below), whose sum is σ = 172345942080. Its totient is φ = 150139917312.

The previous prime is 161143410217. The next prime is 161143410247. The reversal of 161143410227 is 722014341161.

It is a cyclic number.

It is not a de Polignac number, because 161143410227 - 2⁸ = 161143409971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161143410193 and 161143410202.

It is not an unprimeable number, because it can be changed into a prime (161143410217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567674 + ... + 802832.

It is an arithmetic number, because the mean of its divisors is an integer number (10771621380).

Almost surely, 2^161143410227 is an apocalyptic number.

161143410227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161143410227 is a deficient number, since it is larger than the sum of its proper divisors (11202531853).

161143410227 is a wasteful number, since it uses less digits than its factorization.

161143410227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235582.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 161143410227 its reverse (722014341161), we get a palindrome (883157751388).

The spelling of 161143410227 in words is "one hundred sixty-one billion, one hundred forty-three million, four hundred ten thousand, two hundred twenty-seven".