86466789866491 has 2 divisors, whose sum is σ = 86466789866492. Its totient is φ = 86466789866490.

The previous prime is 86466789866357. The next prime is 86466789866519. The reversal of 86466789866491 is 19466898766468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86466789866491 - 2¹⁹ = 86466789342203 is a prime.

It is not a weakly prime, because it can be changed into another prime (86466789366491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43233394933245 + 43233394933246.

It is an arithmetic number, because the mean of its divisors is an integer number (43233394933246).

Almost surely, 2^{86466789866491} is an apocalyptic number.

86466789866491 is a deficient number, since it is larger than the sum of its proper divisors (1).

86466789866491 is an equidigital number, since it uses as much as digits as its factorization.

86466789866491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36118462464, while the sum is 88.

The spelling of 86466789866491 in words is "eighty-six trillion, four hundred sixty-six billion, seven hundred eighty-nine million, eight hundred sixty-six thousand, four hundred ninety-one".