2516556544 has 36 divisors (see below), whose sum is σ = 5027148504. Its totient is φ = 1257310208.

The previous prime is 2516556541. The next prime is 2516556551. The reversal of 2516556544 is 4456556152.

It is a self number, because there is not a number n which added to its sum of digits gives 2516556544.

It is not an unprimeable number, because it can be changed into a prime (2516556541) by changing a digit.

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, 423804 + ... + 429700.

It is an arithmetic number, because the mean of its divisors is an integer number (139643014).

Almost surely, 2^2516556544 is an apocalyptic number.

It is an amenable number.

2516556544 is a deficient number, since it is larger than the sum of its proper divisors (2510591960).

2516556544 is an equidigital number, since it uses as much as digits as its factorization.

2516556544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580 (or 7566 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The square root of 2516556544 is about 50165.2922248042. The cubic root of 2516556544 is about 1360.1983101821.

The spelling of 2516556544 in words is "two billion, five hundred sixteen million, five hundred fifty-six thousand, five hundred forty-four".