86315418181 has 2 divisors, whose sum is σ = 86315418182. Its totient is φ = 86315418180.

The previous prime is 86315418149. The next prime is 86315418283. The reversal of 86315418181 is 18181451368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86294350081 + 21068100 = 293759^2 + 4590^2 .

It is a cyclic number.

It is not a de Polignac number, because 86315418181 - 2⁵ = 86315418149 is a prime.

It is a super-2 number, since 2×86315418181² (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 (86315418131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43157709090 + 43157709091.

It is an arithmetic number, because the mean of its divisors is an integer number (43157709091).

Almost surely, 2^86315418181 is an apocalyptic number.

It is an amenable number.

86315418181 is a deficient number, since it is larger than the sum of its proper divisors (1).

86315418181 is an equidigital number, since it uses as much as digits as its factorization.

86315418181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 46.

The spelling of 86315418181 in words is "eighty-six billion, three hundred fifteen million, four hundred eighteen thousand, one hundred eighty-one".