6536532440 has 32 divisors (see below), whose sum is σ = 14849995680. Its totient is φ = 2589226752.

The previous prime is 6536532433. The next prime is 6536532463. The reversal of 6536532440 is 442356356.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6536532394 and 6536532403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789149 + ... + 797388.

It is an arithmetic number, because the mean of its divisors is an integer number (464062365).

Almost surely, 2^6536532440 is an apocalyptic number.

It is an amenable number.

6536532440 is an abundant number, since it is smaller than the sum of its proper divisors (8313463240).

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

6536532440 is a wasteful number, since it uses less digits than its factorization.

6536532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586651 (or 1586647 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

The square root of 6536532440 is about 80848.8246049378. The cubic root of 6536532440 is about 1869.7454008190.

Adding to 6536532440 its reverse (442356356), we get a palindrome (6978888796).

The spelling of 6536532440 in words is "six billion, five hundred thirty-six million, five hundred thirty-two thousand, four hundred forty".