6443553468 has 36 divisors (see below), whose sum is σ = 16526032040. Its totient is φ = 1952591520.

The previous prime is 6443553463. The next prime is 6443553491. The reversal of 6443553468 is 8643553446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443553463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2217403 + ... + 2220306.

Almost surely, 2^6443553468 is an apocalyptic number.

It is an amenable number.

6443553468 is an abundant number, since it is smaller than the sum of its proper divisors (10082478572).

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

6443553468 is a wasteful number, since it uses less digits than its factorization.

6443553468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437738 (or 4437725 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 48.

The square root of 6443553468 is about 80271.7476326509. The cubic root of 6443553468 is about 1860.8376259672.

The spelling of 6443553468 in words is "six billion, four hundred forty-three million, five hundred fifty-three thousand, four hundred sixty-eight".