871949113811 has 2 divisors, whose sum is σ = 871949113812. Its totient is φ = 871949113810.

The previous prime is 871949113709. The next prime is 871949113817. The reversal of 871949113811 is 118311949178.

871949113811 is digitally balanced in base 2, 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 not a de Polignac number, because 871949113811 - 2¹⁴ = 871949097427 is a prime.

It is not a weakly prime, because it can be changed into another prime (871949113817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435974556905 + 435974556906.

It is an arithmetic number, because the mean of its divisors is an integer number (435974556906).

Almost surely, 2^871949113811 is an apocalyptic number.

871949113811 is a deficient number, since it is larger than the sum of its proper divisors (1).

871949113811 is an equidigital number, since it uses as much as digits as its factorization.

871949113811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 53.

The spelling of 871949113811 in words is "eight hundred seventy-one billion, nine hundred forty-nine million, one hundred thirteen thousand, eight hundred eleven".