6520413750 has 160 divisors (see below), whose sum is σ = 18008635392. Its totient is φ = 1564992000.

The previous prime is 6520413743. The next prime is 6520413761. The reversal of 6520413750 is 573140256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1464027 + ... + 1468473.

Almost surely, 2^6520413750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6520413750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9004317696).

6520413750 is an abundant number, since it is smaller than the sum of its proper divisors (11488221642).

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

6520413750 is a wasteful number, since it uses less digits than its factorization.

6520413750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 6520413750 is about 80749.0789421155. The cubic root of 6520413750 is about 1868.2072431153.

The spelling of 6520413750 in words is "six billion, five hundred twenty million, four hundred thirteen thousand, seven hundred fifty".