5782781111 has 2 divisors, whose sum is σ = 5782781112. Its totient is φ = 5782781110.

The previous prime is 5782781087. The next prime is 5782781113. The reversal of 5782781111 is 1111872875.

5782781111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5782781111 is a prime.

Together with 5782781113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5782781113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2891390555 + 2891390556.

It is an arithmetic number, because the mean of its divisors is an integer number (2891390556).

Almost surely, 2^5782781111 is an apocalyptic number.

5782781111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5782781111 is an equidigital number, since it uses as much as digits as its factorization.

5782781111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 41.

The square root of 5782781111 is about 76044.5994860911. The cubic root of 5782781111 is about 1794.9220162529.

The spelling of 5782781111 in words is "five billion, seven hundred eighty-two million, seven hundred eighty-one thousand, one hundred eleven".