13955664663 has 16 divisors (see below), whose sum is σ = 21155875840. Its totient is φ = 9087408792.

The previous prime is 13955664623. The next prime is 13955664683. The reversal of 13955664663 is 36646655931.

It is a happy number.

13955664663 is a `hidden beast` number, since 1 + 39 + 5 + 566 + 46 + 6 + 3 = 666.

It is not a de Polignac number, because 13955664663 - 2¹² = 13955660567 is a prime.

It is a super-2 number, since 2×13955664663² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13955664623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6009031 + ... + 6011352.

It is an arithmetic number, because the mean of its divisors is an integer number (1322242240).

Almost surely, 2^13955664663 is an apocalyptic number.

13955664663 is a deficient number, since it is larger than the sum of its proper divisors (7200211177).

13955664663 is a wasteful number, since it uses less digits than its factorization.

13955664663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12020435 (or 12020429 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 54.

The spelling of 13955664663 in words is "thirteen billion, nine hundred fifty-five million, six hundred sixty-four thousand, six hundred sixty-three".