6500555028 has 72 divisors (see below), whose sum is σ = 17975018880. Its totient is φ = 1964453760.

The previous prime is 6500554939. The next prime is 6500555029. The reversal of 6500555028 is 8205550056.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6500554983 and 6500555001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500555029) 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, 122968 + ... + 167696.

It is an arithmetic number, because the mean of its divisors is an integer number (249653040).

Almost surely, 2^6500555028 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 6500555028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8987509440).

6500555028 is an abundant number, since it is smaller than the sum of its proper divisors (11474463852).

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

6500555028 is a wasteful number, since it uses less digits than its factorization.

6500555028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45117 (or 45112 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 6500555028 is about 80626.0195470420. The cubic root of 6500555028 is about 1866.3086960814.

The spelling of 6500555028 in words is "six billion, five hundred million, five hundred fifty-five thousand, twenty-eight".