6442510044 has 24 divisors (see below), whose sum is σ = 15823709440. Its totient is φ = 2034476784.

The previous prime is 6442510021. The next prime is 6442510057. The reversal of 6442510044 is 4400152446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6442509993 and 6442510020.

It is a congruent number.

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, 14128084 + ... + 14128539.

Almost surely, 2^6442510044 is an apocalyptic number.

It is an amenable number.

6442510044 is an abundant number, since it is smaller than the sum of its proper divisors (9381199396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6442510044 is a wasteful number, since it uses less digits than its factorization.

6442510044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28256649 (or 28256647 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 6442510044 is about 80265.2480467107. The cubic root of 6442510044 is about 1860.7371768664.

The spelling of 6442510044 in words is "six billion, four hundred forty-two million, five hundred ten thousand, forty-four".