166431324322 has 4 divisors (see below), whose sum is σ = 249646986486. Its totient is φ = 83215662160.

The previous prime is 166431324281. The next prime is 166431324341. The reversal of 166431324322 is 223423134661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140850840601 + 25580483721 = 375301^2 + 159939^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41607831079 + ... + 41607831082.

Almost surely, 2^166431324322 is an apocalyptic number.

166431324322 is a deficient number, since it is larger than the sum of its proper divisors (83215662164).

166431324322 is an equidigital number, since it uses as much as digits as its factorization.

166431324322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83215662163.

The product of its digits is 124416, while the sum is 37.

Adding to 166431324322 its reverse (223423134661), we get a palindrome (389854458983).

The spelling of 166431324322 in words is "one hundred sixty-six billion, four hundred thirty-one million, three hundred twenty-four thousand, three hundred twenty-two".