13968541663 has 4 divisors (see below), whose sum is σ = 13973171560. Its totient is φ = 13963911768.

The previous prime is 13968541651. The next prime is 13968541681. The reversal of 13968541663 is 36614586931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13968541663 - 2¹⁷ = 13968410591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13968541663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13968541063) 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, 2310420 + ... + 2316457.

It is an arithmetic number, because the mean of its divisors is an integer number (3493292890).

Almost surely, 2^13968541663 is an apocalyptic number.

13968541663 is a deficient number, since it is larger than the sum of its proper divisors (4629897).

13968541663 is an equidigital number, since it uses as much as digits as its factorization.

13968541663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629896.

The product of its digits is 2799360, while the sum is 52.

The spelling of 13968541663 in words is "thirteen billion, nine hundred sixty-eight million, five hundred forty-one thousand, six hundred sixty-three".