6444500200 has 48 divisors (see below), whose sum is σ = 15011410860. Its totient is φ = 2572992000.

The previous prime is 6444500149. The next prime is 6444500201. The reversal of 6444500200 is 20054446.

It can be written as a sum of positive squares in 6 ways, for example, as 4348874916 + 2095625284 = 65946^2 + 45778^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (6444500201) 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 11 ways as a sum of consecutive naturals, for example, 78420 + ... + 137980.

Almost surely, 2^6444500200 is an apocalyptic number.

It is an amenable number.

6444500200 is an abundant number, since it is smaller than the sum of its proper divisors (8566910660).

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

6444500200 is a wasteful number, since it uses less digits than its factorization.

6444500200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60118 (or 60109 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 6444500200 is about 80277.6444597124. The cubic root of 6444500200 is about 1860.9287572693.

Adding to 6444500200 its reverse (20054446), we get a palindrome (6464554646).

The spelling of 6444500200 in words is "six billion, four hundred forty-four million, five hundred thousand, two hundred".