86556847999 has 2 divisors, whose sum is σ = 86556848000. Its totient is φ = 86556847998.

The previous prime is 86556847987. The next prime is 86556848041. The reversal of 86556847999 is 99974865568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86556847999 - 2¹⁷ = 86556716927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86556847919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43278423999 + 43278424000.

It is an arithmetic number, because the mean of its divisors is an integer number (43278424000).

Almost surely, 2^86556847999 is an apocalyptic number.

86556847999 is a deficient number, since it is larger than the sum of its proper divisors (1).

86556847999 is an equidigital number, since it uses as much as digits as its factorization.

86556847999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1175731200, while the sum is 76.

The spelling of 86556847999 in words is "eighty-six billion, five hundred fifty-six million, eight hundred forty-seven thousand, nine hundred ninety-nine".