14217808661 has 16 divisors (see below), whose sum is σ = 17521311360. Its totient is φ = 11263691520.

The previous prime is 14217808643. The next prime is 14217808711. The reversal of 14217808661 is 16680871241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14217808661 is a prime.

It is a super-2 number, since 2×14217808661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14217808061) 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, 1298216 + ... + 1309121.

It is an arithmetic number, because the mean of its divisors is an integer number (1095081960).

Almost surely, 2^14217808661 is an apocalyptic number.

It is an amenable number.

14217808661 is a deficient number, since it is larger than the sum of its proper divisors (3303502699).

14217808661 is a wasteful number, since it uses less digits than its factorization.

14217808661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607404.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 14217808661 in words is "fourteen billion, two hundred seventeen million, eight hundred eight thousand, six hundred sixty-one".