6501611600 has 60 divisors (see below), whose sum is σ = 17040144480. Its totient is φ = 2364220800.

The previous prime is 6501611533. The next prime is 6501611663. The reversal of 6501611600 is 61161056.

It is a self number, because there is not a number n which added to its sum of digits gives 6501611600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734420 + ... + 743219.

It is an arithmetic number, because the mean of its divisors is an integer number (284002408).

Almost surely, 2^6501611600 is an apocalyptic number.

It is an amenable number.

6501611600 is an abundant number, since it is smaller than the sum of its proper divisors (10538532880).

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

6501611600 is a wasteful number, since it uses less digits than its factorization.

6501611600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477668 (or 1477657 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 6501611600 is about 80632.5715824567. The cubic root of 6501611600 is about 1866.4098045088.

Adding to 6501611600 its reverse (61161056), we get a palindrome (6562772656).

The spelling of 6501611600 in words is "six billion, five hundred one million, six hundred eleven thousand, six hundred".