14686686431 has 4 divisors (see below), whose sum is σ = 14689054992. Its totient is φ = 14684317872.

The previous prime is 14686686401. The next prime is 14686686433. The reversal of 14686686431 is 13468668641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13468668641 = 4517 ⋅2981773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14686686431 is a prime.

It is a super-2 number, since 2×14686686431² (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 (14686686433) 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, 1174955 + ... + 1187388.

It is an arithmetic number, because the mean of its divisors is an integer number (3672263748).

Almost surely, 2^14686686431 is an apocalyptic number.

14686686431 is a deficient number, since it is larger than the sum of its proper divisors (2368561).

14686686431 is an equidigital number, since it uses as much as digits as its factorization.

14686686431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368560.

The product of its digits is 3981312, while the sum is 53.

The spelling of 14686686431 in words is "fourteen billion, six hundred eighty-six million, six hundred eighty-six thousand, four hundred thirty-one".