229742221636 has 24 divisors (see below), whose sum is σ = 405772761240. Its totient is φ = 113807331072.

The previous prime is 229742221619. The next prime is 229742221649. The reversal of 229742221636 is 636122247922.

229742221636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34250904900 + 195491316736 = 185070^2 + 442144^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9989046 + ... + 10012018.

It is an arithmetic number, because the mean of its divisors is an integer number (16907198385).

Almost surely, 2^229742221636 is an apocalyptic number.

It is an amenable number.

229742221636 is a deficient number, since it is larger than the sum of its proper divisors (176030539604).

229742221636 is a wasteful number, since it uses less digits than its factorization.

229742221636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46023 (or 46021 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 229742221636 in words is "two hundred twenty-nine billion, seven hundred forty-two million, two hundred twenty-one thousand, six hundred thirty-six".