13221563662 has 8 divisors (see below), whose sum is σ = 20694621456. Its totient is φ = 6323356512.

The previous prime is 13221563651. The next prime is 13221563669. The reversal of 13221563662 is 26636512231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221563669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143712603 + ... + 143712694.

It is an arithmetic number, because the mean of its divisors is an integer number (2586827682).

Almost surely, 2^13221563662 is an apocalyptic number.

13221563662 is a deficient number, since it is larger than the sum of its proper divisors (7473057794).

13221563662 is a wasteful number, since it uses less digits than its factorization.

13221563662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287425322.

The product of its digits is 77760, while the sum is 37.

The spelling of 13221563662 in words is "thirteen billion, two hundred twenty-one million, five hundred sixty-three thousand, six hundred sixty-two".