6515532000 has 768 divisors, whose sum is σ = 25738352640. Its totient is φ = 1596672000.

The previous prime is 6515531989. The next prime is 6515532017. The reversal of 6515532000 is 2355156.

6515532000 is a `hidden beast` number, since 651 + 5 + 5 + 3 + 2 + 0 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 106811970 + ... + 106812030.

It is an arithmetic number, because the mean of its divisors is an integer number (33513480).

Almost surely, 2^6515532000 is an apocalyptic number.

6515532000 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 6515532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12869176320).

6515532000 is an abundant number, since it is smaller than the sum of its proper divisors (19222820640).

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

6515532000 is a wasteful number, since it uses less digits than its factorization.

6515532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 6515532000 is about 80718.8453832189. The cubic root of 6515532000 is about 1867.7408924590.

Adding to 6515532000 its reverse (2355156), we get a palindrome (6517887156).

The spelling of 6515532000 in words is "six billion, five hundred fifteen million, five hundred thirty-two thousand".