13966681478 has 8 divisors (see below), whose sum is σ = 21437232168. Its totient is φ = 6820937424.

The previous prime is 13966681427. The next prime is 13966681489. The reversal of 13966681478 is 87418666931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81201551 + ... + 81201722.

It is an arithmetic number, because the mean of its divisors is an integer number (2679654021).

Almost surely, 2^13966681478 is an apocalyptic number.

13966681478 is a deficient number, since it is larger than the sum of its proper divisors (7470550690).

13966681478 is a wasteful number, since it uses less digits than its factorization.

13966681478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162403318.

The product of its digits is 10450944, while the sum is 59.

The spelling of 13966681478 in words is "thirteen billion, nine hundred sixty-six million, six hundred eighty-one thousand, four hundred seventy-eight".