14185668639 has 16 divisors (see below), whose sum is σ = 19323002880. Its totient is φ = 9252855840.

The previous prime is 14185668631. The next prime is 14185668671. The reversal of 14185668639 is 93686658141.

It is not a de Polignac number, because 14185668639 - 2³ = 14185668631 is a prime.

It is a super-2 number, since 2×14185668639² (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 (14185668631) 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, 463297 + ... + 492965.

It is an arithmetic number, because the mean of its divisors is an integer number (1207687680).

Almost surely, 2^14185668639 is an apocalyptic number.

14185668639 is a deficient number, since it is larger than the sum of its proper divisors (5137334241).

14185668639 is a wasteful number, since it uses less digits than its factorization.

14185668639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33110.

The product of its digits is 7464960, while the sum is 57.

It can be divided in two parts, 1418566 and 8639, that added together give a triangular number (1427205 = T₁₆₈₉).

The spelling of 14185668639 in words is "fourteen billion, one hundred eighty-five million, six hundred sixty-eight thousand, six hundred thirty-nine".