871156085801 has 2 divisors, whose sum is σ = 871156085802. Its totient is φ = 871156085800.

The previous prime is 871156085771. The next prime is 871156085861. The reversal of 871156085801 is 108580651178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 747057705625 + 124098380176 = 864325^2 + 352276^2 .

It is a cyclic number.

It is not a de Polignac number, because 871156085801 - 2²⁶ = 871088976937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 871156085801.

It is not a weakly prime, because it can be changed into another prime (871156085861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435578042900 + 435578042901.

It is an arithmetic number, because the mean of its divisors is an integer number (435578042901).

Almost surely, 2^871156085801 is an apocalyptic number.

It is an amenable number.

871156085801 is a deficient number, since it is larger than the sum of its proper divisors (1).

871156085801 is an equidigital number, since it uses as much as digits as its factorization.

871156085801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 50.

The spelling of 871156085801 in words is "eight hundred seventy-one billion, one hundred fifty-six million, eighty-five thousand, eight hundred one".