6342543664 has 20 divisors (see below), whose sum is σ = 12822969456. Its totient is φ = 3033390272.

The previous prime is 6342543661. The next prime is 6342543679. The reversal of 6342543664 is 4663452436.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6342543664.

It is not an unprimeable number, because it can be changed into a prime (6342543661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8617219 + ... + 8617954.

Almost surely, 2^6342543664 is an apocalyptic number.

It is an amenable number.

6342543664 is an abundant number, since it is smaller than the sum of its proper divisors (6480425792).

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

6342543664 is a wasteful number, since it uses less digits than its factorization.

6342543664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235204 (or 17235198 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 43.

The square root of 6342543664 is about 79640.0882972891. The cubic root of 6342543664 is about 1851.0628092255.

The spelling of 6342543664 in words is "six billion, three hundred forty-two million, five hundred forty-three thousand, six hundred sixty-four".