2561113304 has 16 divisors (see below), whose sum is σ = 4880811120. Its totient is φ = 1259563680.

The previous prime is 2561113297. The next prime is 2561113333. The reversal of 2561113304 is 4033111652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623604 + ... + 2624579.

It is an arithmetic number, because the mean of its divisors is an integer number (305050695).

Almost surely, 2^2561113304 is an apocalyptic number.

It is an amenable number.

2561113304 is a deficient number, since it is larger than the sum of its proper divisors (2319697816).

2561113304 is a wasteful number, since it uses less digits than its factorization.

2561113304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248250 (or 5248246 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2561113304 is about 50607.4431679768. The cubic root of 2561113304 is about 1368.1790330873.

Adding to 2561113304 its reverse (4033111652), we get a palindrome (6594224956).

The spelling of 2561113304 in words is "two billion, five hundred sixty-one million, one hundred thirteen thousand, three hundred four".