86771897141 has 2 divisors, whose sum is σ = 86771897142. Its totient is φ = 86771897140.

The previous prime is 86771897123. The next prime is 86771897161. The reversal of 86771897141 is 14179817768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45137127025 + 41634770116 = 212455^2 + 204046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86771897141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86771897161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43385948570 + 43385948571.

It is an arithmetic number, because the mean of its divisors is an integer number (43385948571).

Almost surely, 2^86771897141 is an apocalyptic number.

It is an amenable number.

86771897141 is a deficient number, since it is larger than the sum of its proper divisors (1).

86771897141 is an equidigital number, since it uses as much as digits as its factorization.

86771897141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 59.

The spelling of 86771897141 in words is "eighty-six billion, seven hundred seventy-one million, eight hundred ninety-seven thousand, one hundred forty-one".