14191317778 has 48 divisors (see below), whose sum is σ = 25202691360. Its totient is φ = 5968892160.

The previous prime is 14191317769. The next prime is 14191317793. The reversal of 14191317778 is 87771319141.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161826 + ... + 233602.

It is an arithmetic number, because the mean of its divisors is an integer number (525056070).

Almost surely, 2^14191317778 is an apocalyptic number.

14191317778 is a deficient number, since it is larger than the sum of its proper divisors (11011373582).

14191317778 is a wasteful number, since it uses less digits than its factorization.

14191317778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71863 (or 71852 counting only the distinct ones).

The product of its digits is 296352, while the sum is 49.

The spelling of 14191317778 in words is "fourteen billion, one hundred ninety-one million, three hundred seventeen thousand, seven hundred seventy-eight".