86745913117 has 2 divisors, whose sum is σ = 86745913118. Its totient is φ = 86745913116.

The previous prime is 86745912947. The next prime is 86745913147. The reversal of 86745913117 is 71131954768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75815419716 + 10930493401 = 275346^2 + 104549^2 .

It is a cyclic number.

It is not a de Polignac number, because 86745913117 - 2¹¹ = 86745911069 is a prime.

It is a super-2 number, since 2×86745913117² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86745913147) 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, 43372956558 + 43372956559.

It is an arithmetic number, because the mean of its divisors is an integer number (43372956559).

Almost surely, 2^86745913117 is an apocalyptic number.

It is an amenable number.

86745913117 is a deficient number, since it is larger than the sum of its proper divisors (1).

86745913117 is an equidigital number, since it uses as much as digits as its factorization.

86745913117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 52.

The spelling of 86745913117 in words is "eighty-six billion, seven hundred forty-five million, nine hundred thirteen thousand, one hundred seventeen".