6520203650 has 24 divisors (see below), whose sum is σ = 12518793984. Its totient is φ = 2523949200.

The previous prime is 6520203611. The next prime is 6520203653. The reversal of 6520203650 is 563020256.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6520203653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2101742 + ... + 2104841.

It is an arithmetic number, because the mean of its divisors is an integer number (521616416).

Almost surely, 2^6520203650 is an apocalyptic number.

6520203650 is a deficient number, since it is larger than the sum of its proper divisors (5998590334).

6520203650 is a wasteful number, since it uses less digits than its factorization.

6520203650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206626 (or 4206621 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 6520203650 is about 80747.7779880041. Note that the first 3 decimals coincide. The cubic root of 6520203650 is about 1868.1871771822.

The spelling of 6520203650 in words is "six billion, five hundred twenty million, two hundred three thousand, six hundred fifty".