6515542032 has 80 divisors (see below), whose sum is σ = 17235176640. Its totient is φ = 2120380416.

The previous prime is 6515542031. The next prime is 6515542057. The reversal of 6515542032 is 2302455156.

It is a junction number, because it is equal to n+sod(n) for n = 6515541984 and 6515542002.

It is not an unprimeable number, because it can be changed into a prime (6515542031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354444 + ... + 372372.

It is an arithmetic number, because the mean of its divisors is an integer number (215439708).

Almost surely, 2^6515542032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6515542032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8617588320).

6515542032 is an abundant number, since it is smaller than the sum of its proper divisors (10719634608).

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

6515542032 is a wasteful number, since it uses less digits than its factorization.

6515542032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18120 (or 18114 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 6515542032 is about 80718.9075248173. The cubic root of 6515542032 is about 1867.7418510487.

Adding to 6515542032 its reverse (2302455156), we get a palindrome (8817997188).

The spelling of 6515542032 in words is "six billion, five hundred fifteen million, five hundred forty-two thousand, thirty-two".