86965313909 has 2 divisors, whose sum is σ = 86965313910. Its totient is φ = 86965313908.

The previous prime is 86965313899. The next prime is 86965313927. The reversal of 86965313909 is 90931356968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81508537009 + 5456776900 = 285497^2 + 73870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86965313909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86961313909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43482656954 + 43482656955.

It is an arithmetic number, because the mean of its divisors is an integer number (43482656955).

Almost surely, 2^86965313909 is an apocalyptic number.

It is an amenable number.

86965313909 is a deficient number, since it is larger than the sum of its proper divisors (1).

86965313909 is an equidigital number, since it uses as much as digits as its factorization.

86965313909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9447840, while the sum is 59.

The spelling of 86965313909 in words is "eighty-six billion, nine hundred sixty-five million, three hundred thirteen thousand, nine hundred nine".