86306181881 has 2 divisors, whose sum is σ = 86306181882. Its totient is φ = 86306181880.

The previous prime is 86306181877. The next prime is 86306181959. The reversal of 86306181881 is 18818160368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77709925225 + 8596256656 = 278765^2 + 92716^2 .

It is a cyclic number.

It is not a de Polignac number, because 86306181881 - 2² = 86306181877 is a prime.

It is a super-2 number, since 2×86306181881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86306181821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43153090940 + 43153090941.

It is an arithmetic number, because the mean of its divisors is an integer number (43153090941).

Almost surely, 2^86306181881 is an apocalyptic number.

It is an amenable number.

86306181881 is a deficient number, since it is larger than the sum of its proper divisors (1).

86306181881 is an equidigital number, since it uses as much as digits as its factorization.

86306181881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 86306181881 in words is "eighty-six billion, three hundred six million, one hundred eighty-one thousand, eight hundred eighty-one".