86285231861 has 2 divisors, whose sum is σ = 86285231862. Its totient is φ = 86285231860.

The previous prime is 86285231803. The next prime is 86285231873. The reversal of 86285231861 is 16813258268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50258914225 + 36026317636 = 224185^2 + 189806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86285231861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86285221861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43142615930 + 43142615931.

It is an arithmetic number, because the mean of its divisors is an integer number (43142615931).

Almost surely, 2^86285231861 is an apocalyptic number.

It is an amenable number.

86285231861 is a deficient number, since it is larger than the sum of its proper divisors (1).

86285231861 is an equidigital number, since it uses as much as digits as its factorization.

86285231861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 50.

The spelling of 86285231861 in words is "eighty-six billion, two hundred eighty-five million, two hundred thirty-one thousand, eight hundred sixty-one".