6443336172 has 96 divisors (see below), whose sum is σ = 18548035072. Its totient is φ = 1695292416.

The previous prime is 6443336147. The next prime is 6443336191. The reversal of 6443336172 is 2716333446.

It is a super-2 number, since 2×6443336172² = 83033162050807227168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6443336172.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466023 + ... + 479649.

Almost surely, 2^6443336172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6443336172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9274017536).

6443336172 is an abundant number, since it is smaller than the sum of its proper divisors (12104698900).

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

6443336172 is a wasteful number, since it uses less digits than its factorization.

6443336172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14087 (or 14085 counting only the distinct ones).

The product of its digits is 217728, while the sum is 39.

The square root of 6443336172 is about 80270.3941188780. The cubic root of 6443336172 is about 1860.8167080518.

The spelling of 6443336172 in words is "six billion, four hundred forty-three million, three hundred thirty-six thousand, one hundred seventy-two".