13363221516 has 12 divisors (see below), whose sum is σ = 31180850232. Its totient is φ = 4454407168.

The previous prime is 13363221511. The next prime is 13363221581. The reversal of 13363221516 is 61512236331.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13363221511) 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, 556800885 + ... + 556800908.

It is an arithmetic number, because the mean of its divisors is an integer number (2598404186).

Almost surely, 2^13363221516 is an apocalyptic number.

It is an amenable number.

13363221516 is an abundant number, since it is smaller than the sum of its proper divisors (17817628716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13363221516 is a wasteful number, since it uses less digits than its factorization.

13363221516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113601800 (or 1113601798 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

Adding to 13363221516 its reverse (61512236331), we get a palindrome (74875457847).

The spelling of 13363221516 in words is "thirteen billion, three hundred sixty-three million, two hundred twenty-one thousand, five hundred sixteen".