86727256813 has 2 divisors, whose sum is σ = 86727256814. Its totient is φ = 86727256812.

The previous prime is 86727256787. The next prime is 86727256817. The reversal of 86727256813 is 31865272768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83279570724 + 3447686089 = 288582^2 + 58717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86727256813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86727256817) 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, 43363628406 + 43363628407.

It is an arithmetic number, because the mean of its divisors is an integer number (43363628407).

Almost surely, 2^86727256813 is an apocalyptic number.

It is an amenable number.

86727256813 is a deficient number, since it is larger than the sum of its proper divisors (1).

86727256813 is an equidigital number, since it uses as much as digits as its factorization.

86727256813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The spelling of 86727256813 in words is "eighty-six billion, seven hundred twenty-seven million, two hundred fifty-six thousand, eight hundred thirteen".