2543780650 has 24 divisors (see below), whose sum is σ = 4736170080. Its totient is φ = 1016493360.

The previous prime is 2543780623. The next prime is 2543780651. The reversal of 2543780650 is 560873452.

2543780650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2543780651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25987 + ... + 75913.

It is an arithmetic number, because the mean of its divisors is an integer number (197340420).

Almost surely, 2^2543780650 is an apocalyptic number.

2543780650 is a deficient number, since it is larger than the sum of its proper divisors (2192389430).

2543780650 is a wasteful number, since it uses less digits than its factorization.

2543780650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50958 (or 50953 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2543780650 is about 50435.9063564838. The cubic root of 2543780650 is about 1365.0856033654.

The spelling of 2543780650 in words is "two billion, five hundred forty-three million, seven hundred eighty thousand, six hundred fifty".