2680191111 has 12 divisors (see below), whose sum is σ = 3869625768. Its totient is φ = 1649348064.

The previous prime is 2680191077. The next prime is 2680191133. The reversal of 2680191111 is 1111910862.

It is a happy number.

2680191111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2680191111 - 2⁷ = 2680190983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680191181) 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, 2642680 + ... + 2643693.

It is an arithmetic number, because the mean of its divisors is an integer number (322468814).

Almost surely, 2^2680191111 is an apocalyptic number.

2680191111 is a deficient number, since it is larger than the sum of its proper divisors (1189434657).

2680191111 is a wasteful number, since it uses less digits than its factorization.

2680191111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286402 (or 5286389 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 30.

The square root of 2680191111 is about 51770.5622047897. The cubic root of 2680191111 is about 1389.0629280973.

The spelling of 2680191111 in words is "two billion, six hundred eighty million, one hundred ninety-one thousand, one hundred eleven".