14444947778 has 16 divisors (see below), whose sum is σ = 22294222584. Its totient is φ = 7014263040.

The previous prime is 14444947747. The next prime is 14444947789. The reversal of 14444947778 is 87774944441.

It can be written as a sum of positive squares in 4 ways, for example, as 10715769289 + 3729178489 = 103517^2 + 61067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140375 + ... + 220442.

Almost surely, 2^14444947778 is an apocalyptic number.

14444947778 is a deficient number, since it is larger than the sum of its proper divisors (7849274806).

14444947778 is a wasteful number, since it uses less digits than its factorization.

14444947778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361397.

The product of its digits is 25288704, while the sum is 59.

The spelling of 14444947778 in words is "fourteen billion, four hundred forty-four million, nine hundred forty-seven thousand, seven hundred seventy-eight".