2543995680 has 96 divisors (see below), whose sum is σ = 8230227264. Its totient is φ = 660059136.

The previous prime is 2543995673. The next prime is 2543995697. The reversal of 2543995680 is 865993452.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 53862 + ... + 89381.

It is an arithmetic number, because the mean of its divisors is an integer number (85731534).

Almost surely, 2^2543995680 is an apocalyptic number.

2543995680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543995680 is an abundant number, since it is smaller than the sum of its proper divisors (5686231584).

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

2543995680 is a wasteful number, since it uses less digits than its factorization.

2543995680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143298 (or 143290 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The square root of 2543995680 is about 50438.0380268702. The cubic root of 2543995680 is about 1365.1240665988.

The spelling of 2543995680 in words is "two billion, five hundred forty-three million, nine hundred ninety-five thousand, six hundred eighty".