711777694891 has 2 divisors, whose sum is σ = 711777694892. Its totient is φ = 711777694890.

The previous prime is 711777694819. The next prime is 711777694897. The reversal of 711777694891 is 198496777117.

711777694891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (711777694819) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711777694891 is a prime.

It is not a weakly prime, because it can be changed into another prime (711777694897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355888847445 + 355888847446.

It is an arithmetic number, because the mean of its divisors is an integer number (355888847446).

Almost surely, 2^711777694891 is an apocalyptic number.

711777694891 is a deficient number, since it is larger than the sum of its proper divisors (1).

711777694891 is an equidigital number, since it uses as much as digits as its factorization.

711777694891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37340352, while the sum is 67.

The spelling of 711777694891 in words is "seven hundred eleven billion, seven hundred seventy-seven million, six hundred ninety-four thousand, eight hundred ninety-one".