6443630352 has 100 divisors (see below), whose sum is σ = 18682740736. Its totient is φ = 2144076480.

The previous prime is 6443630311. The next prime is 6443630353. The reversal of 6443630352 is 2530363446.

6443630352 is a `hidden beast` number, since 644 + 3 + 6 + 3 + 0 + 3 + 5 + 2 = 666.

It is a super-2 number, since 2×6443630352² = 83040744226431287808, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (6443630353) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 782577 + ... + 790767.

Almost surely, 2^6443630352 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 6443630352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9341370368).

6443630352 is an abundant number, since it is smaller than the sum of its proper divisors (12239110384).

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

6443630352 is a wasteful number, since it uses less digits than its factorization.

6443630352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818 (or 8803 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

The square root of 6443630352 is about 80272.2265294790. The cubic root of 6443630352 is about 1860.8450270630.

Adding to 6443630352 its reverse (2530363446), we get a palindrome (8973993798).

The spelling of 6443630352 in words is "six billion, four hundred forty-three million, six hundred thirty thousand, three hundred fifty-two".