6500088540 has 288 divisors, whose sum is σ = 22659497280. Its totient is φ = 1545223680.

The previous prime is 6500088527. The next prime is 6500088541. The reversal of 6500088540 is 458800056.

It is a happy number.

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 = 6500088495 and 6500088504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500088541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3462082 + ... + 3463958.

It is an arithmetic number, because the mean of its divisors is an integer number (78678810).

Almost surely, 2^6500088540 is an apocalyptic number.

6500088540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6500088540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11329748640).

6500088540 is an abundant number, since it is smaller than the sum of its proper divisors (16159408740).

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

6500088540 is a wasteful number, since it uses less digits than its factorization.

6500088540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 6500088540 is about 80623.1265828856. The cubic root of 6500088540 is about 1866.2640521275.

Adding to 6500088540 its reverse (458800056), we get a palindrome (6958888596).

The spelling of 6500088540 in words is "six billion, five hundred million, eighty-eight thousand, five hundred forty".