6440450287704 has 64 divisors (see below), whose sum is σ = 16546546844640. Its totient is φ = 2087499248640.

The previous prime is 6440450287703. The next prime is 6440450287723. The reversal of 6440450287704 is 4077820540446.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440450287703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815877 + ... + 3680564.

Almost surely, 2^{6440450287704} is an apocalyptic number.

It is an amenable number.

6440450287704 is an abundant number, since it is smaller than the sum of its proper divisors (10106096556936).

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

6440450287704 is a wasteful number, since it uses less digits than its factorization.

6440450287704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498100 (or 4498096 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 51.

The spelling of 6440450287704 in words is "six trillion, four hundred forty billion, four hundred fifty million, two hundred eighty-seven thousand, seven hundred four".