6500451240 has 48 divisors (see below), whose sum is σ = 21126467700. Its totient is φ = 1733453568.

The previous prime is 6500451197. The next prime is 6500451253. The reversal of 6500451240 is 421540056.

6500451240 is a `hidden beast` number, since 650 + 0 + 4 + 5 + 1 + 2 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6066228996 + 434222244 = 77886^2 + 20838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9028045 + ... + 9028764.

Almost surely, 2^6500451240 is an apocalyptic number.

6500451240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6500451240 is an abundant number, since it is smaller than the sum of its proper divisors (14626016460).

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

6500451240 is a wasteful number, since it uses less digits than its factorization.

6500451240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056826 (or 18056819 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 6500451240 is about 80625.3759061004. The cubic root of 6500451240 is about 1866.2987635205.

Adding to 6500451240 its reverse (421540056), we get a palindrome (6921991296).

The spelling of 6500451240 in words is "six billion, five hundred million, four hundred fifty-one thousand, two hundred forty".