2543656672 has 48 divisors (see below), whose sum is σ = 5054231952. Its totient is φ = 1260103680.

The previous prime is 2543656663. The next prime is 2543656691. The reversal of 2543656672 is 2766563452.

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 7 ways as a sum of consecutive naturals, for example, 1749898 + ... + 1751350.

It is an arithmetic number, because the mean of its divisors is an integer number (105296499).

Almost surely, 2^2543656672 is an apocalyptic number.

It is an amenable number.

2543656672 is a deficient number, since it is larger than the sum of its proper divisors (2510575280).

2543656672 is a wasteful number, since it uses less digits than its factorization.

2543656672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931 (or 1923 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 46.

The square root of 2543656672 is about 50434.6772766516. The cubic root of 2543656672 is about 1365.0634259642.

The spelling of 2543656672 in words is "two billion, five hundred forty-three million, six hundred fifty-six thousand, six hundred seventy-two".