13844438668664 has 16 divisors (see below), whose sum is σ = 26659898788200. Its totient is φ = 6735132325152.

The previous prime is 13844438668657. The next prime is 13844438668693. The reversal of 13844438668664 is 46686683444831.

It is a super-3 number, since 3×13844438668664³ (a number of 40 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23385875834 + ... + 23385876425.

Almost surely, 2^{13844438668664} is an apocalyptic number.

It is an amenable number.

13844438668664 is a deficient number, since it is larger than the sum of its proper divisors (12815460119536).

13844438668664 is a wasteful number, since it uses less digits than its factorization.

13844438668664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46771752302 (or 46771752298 counting only the distinct ones).

The product of its digits is 1528823808, while the sum is 71.

The spelling of 13844438668664 in words is "thirteen trillion, eight hundred forty-four billion, four hundred thirty-eight million, six hundred sixty-eight thousand, six hundred sixty-four".