13616663362568 has 36 divisors (see below), whose sum is σ = 29699769493485. Its totient is φ = 5835681558336.

The previous prime is 13616663362543. The next prime is 13616663362571. The reversal of 13616663362568 is 86526336661631.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12436611327364 + 1180052035204 = 3526558^2 + 1086302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2609278.

It is a super-2 number, since 2×13616663362568² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13616663362568.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 72966596 + ... + 73152972.

Almost surely, 2^{13616663362568} is an apocalyptic number.

It is an amenable number.

13616663362568 is an abundant number, since it is smaller than the sum of its proper divisors (16083106130917).

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

13616663362568 is an frugal number, since it uses more digits than its factorization.

13616663362568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372774 (or 186386 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 62.

The spelling of 13616663362568 in words is "thirteen trillion, six hundred sixteen billion, six hundred sixty-three million, three hundred sixty-two thousand, five hundred sixty-eight".