14643904144 has 15 divisors (see below), whose sum is σ = 28373502153. Its totient is φ = 7321710048.

The previous prime is 14643904139. The next prime is 14643904147. The reversal of 14643904144 is 44140934641.

It is a happy number.

The square root of 14643904144 is 121012.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14023296400 + 620607744 = 118420^2 + 24912^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14643904097 and 14643904106.

It is not an unprimeable number, because it can be changed into a prime (14643904147) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 468922 + ... + 499174.

Almost surely, 2^14643904144 is an apocalyptic number.

14643904144 is the 121012-nd square number.

It is an amenable number.

14643904144 is a deficient number, since it is larger than the sum of its proper divisors (13729598009).

14643904144 is an frugal number, since it uses more digits than its factorization.

14643904144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60514 (or 30255 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 14643904144 in words is "fourteen billion, six hundred forty-three million, nine hundred four thousand, one hundred forty-four".