181043229605 has 16 divisors (see below), whose sum is σ = 248590318464. Its totient is φ = 123992698560.

The previous prime is 181043229571. The next prime is 181043229643. The reversal of 181043229605 is 506922340181.

It is not a de Polignac number, because 181043229605 - 2¹⁶ = 181043164069 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3121487 + ... + 3178956.

It is an arithmetic number, because the mean of its divisors is an integer number (15536894904).

Almost surely, 2^181043229605 is an apocalyptic number.

It is an amenable number.

181043229605 is a deficient number, since it is larger than the sum of its proper divisors (67547088859).

181043229605 is an equidigital number, since it uses as much as digits as its factorization.

181043229605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301276.

The product of its (nonzero) digits is 103680, while the sum is 41.

Adding to 181043229605 its reverse (506922340181), we get a palindrome (687965569786).

The spelling of 181043229605 in words is "one hundred eighty-one billion, forty-three million, two hundred twenty-nine thousand, six hundred five".