6520446000 has 160 divisors (see below), whose sum is σ = 23357880000. Its totient is φ = 1738771200.

The previous prime is 6520445951. The next prime is 6520446001. The reversal of 6520446000 is 6440256.

It is a happy number.

6520446000 is a `hidden beast` number, since 6 + 52 + 0 + 4 + 4 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6520446001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6375 + ... + 114374.

It is an arithmetic number, because the mean of its divisors is an integer number (145986750).

Almost surely, 2^6520446000 is an apocalyptic number.

6520446000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6520446000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11678940000).

6520446000 is an abundant number, since it is smaller than the sum of its proper divisors (16837434000).

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

6520446000 is a wasteful number, since it uses less digits than its factorization.

6520446000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120781 (or 120759 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6520446000 is about 80749.2786345488. The cubic root of 6520446000 is about 1868.2103231644.

Adding to 6520446000 its reverse (6440256), we get a palindrome (6526886256).

The spelling of 6520446000 in words is "six billion, five hundred twenty million, four hundred forty-six thousand".