842585091811 has 2 divisors, whose sum is σ = 842585091812. Its totient is φ = 842585091810.

The previous prime is 842585091797. The next prime is 842585091823. The reversal of 842585091811 is 118190585248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842585091811 - 2³¹ = 840437608163 is a prime.

It is not a weakly prime, because it can be changed into another prime (842585091511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421292545905 + 421292545906.

It is an arithmetic number, because the mean of its divisors is an integer number (421292545906).

Almost surely, 2^842585091811 is an apocalyptic number.

842585091811 is a deficient number, since it is larger than the sum of its proper divisors (1).

842585091811 is an equidigital number, since it uses as much as digits as its factorization.

842585091811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921600, while the sum is 52.

The spelling of 842585091811 in words is "eight hundred forty-two billion, five hundred eighty-five million, ninety-one thousand, eight hundred eleven".