6565533000 has 128 divisors (see below), whose sum is σ = 22060321920. Its totient is φ = 1616121600.

The previous prime is 6565532999. The next prime is 6565533047. The reversal of 6565533000 is 3355656.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45174 + ... + 123173.

It is an arithmetic number, because the mean of its divisors is an integer number (172346265).

Almost surely, 2^6565533000 is an apocalyptic number.

6565533000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6565533000 is an abundant number, since it is smaller than the sum of its proper divisors (15494788920).

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

6565533000 is a wasteful number, since it uses less digits than its factorization.

6565533000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168384 (or 168370 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

The square root of 6565533000 is about 81027.9766500435. The cubic root of 6565533000 is about 1872.5064809523.

Adding to 6565533000 its reverse (3355656), we get a palindrome (6568888656).

The spelling of 6565533000 in words is "six billion, five hundred sixty-five million, five hundred thirty-three thousand".