2780055783 has 8 divisors (see below), whose sum is σ = 4118601200. Its totient is φ = 1853370504.

The previous prime is 2780055779. The next prime is 2780055787. The reversal of 2780055783 is 3875500872.

2780055783 is a `hidden beast` number, since 2 + 78 + 0 + 0 + 5 + 578 + 3 = 666.

2780055783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2780055779) and next prime (2780055787).

It is not a de Polignac number, because 2780055783 - 2² = 2780055779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780055787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51482488 + ... + 51482541.

It is an arithmetic number, because the mean of its divisors is an integer number (514825150).

Almost surely, 2^2780055783 is an apocalyptic number.

2780055783 is a deficient number, since it is larger than the sum of its proper divisors (1338545417).

2780055783 is a wasteful number, since it uses less digits than its factorization.

2780055783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102965038 (or 102965032 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The square root of 2780055783 is about 52726.2342956521. The cubic root of 2780055783 is about 1406.1052726433.

The spelling of 2780055783 in words is "two billion, seven hundred eighty million, fifty-five thousand, seven hundred eighty-three".