14778916443 has 6 divisors (see below), whose sum is σ = 21347323764. Its totient is φ = 9852610956.

The previous prime is 14778916429. The next prime is 14778916447. The reversal of 14778916443 is 34461987741.

It is a happy number.

14778916443 is a `hidden beast` number, since 1 + 47 + 78 + 91 + 6 + 443 = 666.

It is not a de Polignac number, because 14778916443 - 2¹⁰ = 14778915419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14778916443.

It is not an unprimeable number, because it can be changed into a prime (14778916447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 821050905 + ... + 821050922.

It is an arithmetic number, because the mean of its divisors is an integer number (3557887294).

Almost surely, 2^14778916443 is an apocalyptic number.

14778916443 is a deficient number, since it is larger than the sum of its proper divisors (6568407321).

14778916443 is a wasteful number, since it uses less digits than its factorization.

14778916443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642101833 (or 1642101830 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 14778916443 in words is "fourteen billion, seven hundred seventy-eight million, nine hundred sixteen thousand, four hundred forty-three".