6535566500 has 48 divisors (see below), whose sum is σ = 14361424896. Its totient is φ = 2598156000.

The previous prime is 6535566491. The next prime is 6535566511. The reversal of 6535566500 is 56655356.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41405 + ... + 121595.

It is an arithmetic number, because the mean of its divisors is an integer number (299196352).

Almost surely, 2^6535566500 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 6535566500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7180712448).

6535566500 is an abundant number, since it is smaller than the sum of its proper divisors (7825858396).

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

6535566500 is a wasteful number, since it uses less digits than its factorization.

6535566500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80373 (or 80361 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 41.

The square root of 6535566500 is about 80842.8506424656. The cubic root of 6535566500 is about 1869.6532953661.

The spelling of 6535566500 in words is "six billion, five hundred thirty-five million, five hundred sixty-six thousand, five hundred".