322215061666 has 4 divisors (see below), whose sum is σ = 483322592502. Its totient is φ = 161107530832.

The previous prime is 322215061643. The next prime is 322215061741. The reversal of 322215061666 is 666160512223.

It is a happy number.

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., 312839981041 + 9375080625 = 559321^2 + 96825^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80553765415 + ... + 80553765418.

Almost surely, 2^322215061666 is an apocalyptic number.

322215061666 is a deficient number, since it is larger than the sum of its proper divisors (161107530836).

322215061666 is a wasteful number, since it uses less digits than its factorization.

322215061666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161107530835.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 322215061666 its reverse (666160512223), we get a palindrome (988375573889).

The spelling of 322215061666 in words is "three hundred twenty-two billion, two hundred fifteen million, sixty-one thousand, six hundred sixty-six".