86541660714581 has 2 divisors, whose sum is σ = 86541660714582. Its totient is φ = 86541660714580.

The previous prime is 86541660714533. The next prime is 86541660714629. The reversal of 86541660714581 is 18541706614568.

It is a balanced prime because it is at equal distance from previous prime (86541660714533) and next prime (86541660714629).

It can be written as a sum of positive squares in only one way, i.e., 84250993599556 + 2290667115025 = 9178834^2 + 1513495^2 .

It is a cyclic number.

It is not a de Polignac number, because 86541660714581 - 2⁶ = 86541660714517 is a prime.

It is a super-2 number, since 2×86541660714581² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86541660714521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43270830357290 + 43270830357291.

It is an arithmetic number, because the mean of its divisors is an integer number (43270830357291).

Almost surely, 2^{86541660714581} is an apocalyptic number.

It is an amenable number.

86541660714581 is a deficient number, since it is larger than the sum of its proper divisors (1).

86541660714581 is an equidigital number, since it uses as much as digits as its factorization.

86541660714581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 86541660714581 in words is "eighty-six trillion, five hundred forty-one billion, six hundred sixty million, seven hundred fourteen thousand, five hundred eighty-one".