13321025663 has 16 divisors (see below), whose sum is σ = 14733761280. Its totient is φ = 11943072000.

The previous prime is 13321025657. The next prime is 13321025701. The reversal of 13321025663 is 36652012331.

It is a cyclic number.

It is not a de Polignac number, because 13321025663 - 2¹⁶ = 13320960127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321025623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202031 + ... + 259727.

It is an arithmetic number, because the mean of its divisors is an integer number (920860080).

Almost surely, 2^13321025663 is an apocalyptic number.

13321025663 is a deficient number, since it is larger than the sum of its proper divisors (1412735617).

13321025663 is a wasteful number, since it uses less digits than its factorization.

13321025663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57998.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 13321025663 its reverse (36652012331), we get a palindrome (49973037994).

The spelling of 13321025663 in words is "thirteen billion, three hundred twenty-one million, twenty-five thousand, six hundred sixty-three".