6511323203 has 24 divisors (see below), whose sum is σ = 8455170240. Its totient is φ = 4955746320.

The previous prime is 6511323193. The next prime is 6511323209. The reversal of 6511323203 is 3023231156.

It is not a de Polignac number, because 6511323203 - 2¹⁸ = 6511061059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6511323209) 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 23 ways as a sum of consecutive naturals, for example, 117293 + ... + 163646.

It is an arithmetic number, because the mean of its divisors is an integer number (352298760).

Almost surely, 2^6511323203 is an apocalyptic number.

6511323203 is a deficient number, since it is larger than the sum of its proper divisors (1943847037).

6511323203 is a wasteful number, since it uses less digits than its factorization.

6511323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281007 (or 281000 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 6511323203 is about 80692.7704506420. The cubic root of 6511323203 is about 1867.3386415760.

Adding to 6511323203 its reverse (3023231156), we get a palindrome (9534554359).

The spelling of 6511323203 in words is "six billion, five hundred eleven million, three hundred twenty-three thousand, two hundred three".