161143410226 has 16 divisors (see below), whose sum is σ = 242307655128. Its totient is φ = 80374291200.

The previous prime is 161143410217. The next prime is 161143410247. The reversal of 161143410226 is 622014341161.

It can be written as a sum of positive squares in 4 ways, for example, as 124605470025 + 36537940201 = 352995^2 + 191149^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3529786 + ... + 3575146.

Almost surely, 2^161143410226 is an apocalyptic number.

161143410226 is a deficient number, since it is larger than the sum of its proper divisors (81164244902).

161143410226 is a wasteful number, since it uses less digits than its factorization.

161143410226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49677.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 161143410226 its reverse (622014341161), we get a palindrome (783157751387).

The spelling of 161143410226 in words is "one hundred sixty-one billion, one hundred forty-three million, four hundred ten thousand, two hundred twenty-six".