6538505512 has 96 divisors (see below), whose sum is σ = 15671124000. Its totient is φ = 2528910720.

The previous prime is 6538505509. The next prime is 6538505513. The reversal of 6538505512 is 2155058356.

It is not an unprimeable number, because it can be changed into a prime (6538505513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 593914 + ... + 604822.

It is an arithmetic number, because the mean of its divisors is an integer number (163240875).

Almost surely, 2^6538505512 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 6538505512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7835562000).

6538505512 is an abundant number, since it is smaller than the sum of its proper divisors (9132618488).

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

6538505512 is a wasteful number, since it uses less digits than its factorization.

6538505512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11079 (or 11068 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The square root of 6538505512 is about 80861.0259148374. The cubic root of 6538505512 is about 1869.9335113195.

The spelling of 6538505512 in words is "six billion, five hundred thirty-eight million, five hundred five thousand, five hundred twelve".