13321366402 has 16 divisors (see below), whose sum is σ = 20051091000. Its totient is φ = 6637703040.

The previous prime is 13321366397. The next prime is 13321366441. The reversal of 13321366402 is 20466312331.

It can be written as a sum of positive squares in 4 ways, for example, as 13009455481 + 311910921 = 114059^2 + 17661^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860224 + ... + 875572.

Almost surely, 2^13321366402 is an apocalyptic number.

13321366402 is a deficient number, since it is larger than the sum of its proper divisors (6729724598).

13321366402 is a wasteful number, since it uses less digits than its factorization.

13321366402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16821.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 13321366402 its reverse (20466312331), we get a palindrome (33787678733).

The spelling of 13321366402 in words is "thirteen billion, three hundred twenty-one million, three hundred sixty-six thousand, four hundred two".