86488228781 has 2 divisors, whose sum is σ = 86488228782. Its totient is φ = 86488228780.

The previous prime is 86488228763. The next prime is 86488228823. The reversal of 86488228781 is 18782288468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68796568681 + 17691660100 = 262291^2 + 133010^2 .

It is a cyclic number.

It is not a de Polignac number, because 86488228781 - 2¹⁴ = 86488212397 is a prime.

It is a super-2 number, since 2×86488228781² (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 (86488228081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43244114390 + 43244114391.

It is an arithmetic number, because the mean of its divisors is an integer number (43244114391).

Almost surely, 2^86488228781 is an apocalyptic number.

It is an amenable number.

86488228781 is a deficient number, since it is larger than the sum of its proper divisors (1).

86488228781 is an equidigital number, since it uses as much as digits as its factorization.

86488228781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22020096, while the sum is 62.

The spelling of 86488228781 in words is "eighty-six billion, four hundred eighty-eight million, two hundred twenty-eight thousand, seven hundred eighty-one".