66321322311602 has 4 divisors (see below), whose sum is σ = 99481983467406. Its totient is φ = 33160661155800.

The previous prime is 66321322311583. The next prime is 66321322311683. The reversal of 66321322311602 is 20611322312366.

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., 65074859476201 + 1246462835401 = 8066899^2 + 1116451^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16580330577899 + ... + 16580330577902.

Almost surely, 2^{66321322311602} is an apocalyptic number.

66321322311602 is a deficient number, since it is larger than the sum of its proper divisors (33160661155804).

66321322311602 is a wasteful number, since it uses less digits than its factorization.

66321322311602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33160661155803.

The product of its (nonzero) digits is 93312, while the sum is 38.

Adding to 66321322311602 its reverse (20611322312366), we get a palindrome (86932644623968).

The spelling of 66321322311602 in words is "sixty-six trillion, three hundred twenty-one billion, three hundred twenty-two million, three hundred eleven thousand, six hundred two".