6520423203 has 24 divisors (see below), whose sum is σ = 11231870208. Its totient is φ = 3563957232.

The previous prime is 6520423187. The next prime is 6520423229. The reversal of 6520423203 is 3023240256.

6520423203 is a `hidden beast` number, since 652 + 0 + 4 + 2 + 3 + 2 + 0 + 3 = 666.

It is not a de Polignac number, because 6520423203 - 2⁴ = 6520423187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6520423243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2248525 + ... + 2251422.

It is an arithmetic number, because the mean of its divisors is an integer number (467994592).

Almost surely, 2^6520423203 is an apocalyptic number.

6520423203 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6520423203 is a deficient number, since it is larger than the sum of its proper divisors (4711447005).

6520423203 is a wasteful number, since it uses less digits than its factorization.

6520423203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499983 (or 4499980 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 6520423203 is about 80749.1374752697. The cubic root of 6520423203 is about 1868.2081459289.

Adding to 6520423203 its reverse (3023240256), we get a palindrome (9543663459).

The spelling of 6520423203 in words is "six billion, five hundred twenty million, four hundred twenty-three thousand, two hundred three".