6443432712 has 112 divisors (see below), whose sum is σ = 18150445440. Its totient is φ = 2143477728.

The previous prime is 6443432651. The next prime is 6443432753. The reversal of 6443432712 is 2172343446.

6443432712 is a `hidden beast` number, since 6 + 44 + 343 + 271 + 2 = 666.

It is a super-2 number, since 2×6443432712² = 83035650228143349888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4332433 + ... + 4333919.

Almost surely, 2^6443432712 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 6443432712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9075222720).

6443432712 is an abundant number, since it is smaller than the sum of its proper divisors (11707012728).

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

6443432712 is a wasteful number, since it uses less digits than its factorization.

6443432712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2235 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 6443432712 is about 80270.9954591321. The cubic root of 6443432712 is about 1860.8260014956.

The spelling of 6443432712 in words is "six billion, four hundred forty-three million, four hundred thirty-two thousand, seven hundred twelve".