5643448642 has 8 divisors (see below), whose sum is σ = 9116340156. Its totient is φ = 2604668592.

The previous prime is 5643448621. The next prime is 5643448669. The reversal of 5643448642 is 2468443465.

It can be written as a sum of positive squares in 2 ways, for example, as 5617652401 + 25796241 = 74951^2 + 5079^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 5643448592 and 5643448601.

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, 108527833 + ... + 108527884.

Almost surely, 2^5643448642 is an apocalyptic number.

5643448642 is a deficient number, since it is larger than the sum of its proper divisors (3472891514).

5643448642 is a wasteful number, since it uses less digits than its factorization.

5643448642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217055732.

The product of its digits is 2211840, while the sum is 46.

The square root of 5643448642 is about 75122.8902665492. The cubic root of 5643448642 is about 1780.3888223946.

The spelling of 5643448642 in words is "five billion, six hundred forty-three million, four hundred forty-eight thousand, six hundred forty-two".