6443045136 has 60 divisors (see below), whose sum is σ = 19670816880. Its totient is φ = 1952437440.

The previous prime is 6443045099. The next prime is 6443045143. The reversal of 6443045136 is 6315403446.

6443045136 is a `hidden beast` number, since 644 + 3 + 0 + 4 + 5 + 1 + 3 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6443045136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2032206 + ... + 2035373.

It is an arithmetic number, because the mean of its divisors is an integer number (327846948).

Almost surely, 2^6443045136 is an apocalyptic number.

6443045136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6443045136 is an abundant number, since it is smaller than the sum of its proper divisors (13227771744).

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

6443045136 is a wasteful number, since it uses less digits than its factorization.

6443045136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067604 (or 4067595 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6443045136 is about 80268.5812506986. The cubic root of 6443045136 is about 1860.7886908471.

The spelling of 6443045136 in words is "six billion, four hundred forty-three million, forty-five thousand, one hundred thirty-six".