86418471773 has 2 divisors, whose sum is σ = 86418471774. Its totient is φ = 86418471772.

The previous prime is 86418471739. The next prime is 86418471791. The reversal of 86418471773 is 37717481468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81354441529 + 5064030244 = 285227^2 + 71162^2 .

It is a cyclic number.

It is not a de Polignac number, because 86418471773 - 2¹² = 86418467677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86418471703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43209235886 + 43209235887.

It is an arithmetic number, because the mean of its divisors is an integer number (43209235887).

Almost surely, 2^86418471773 is an apocalyptic number.

It is an amenable number.

86418471773 is a deficient number, since it is larger than the sum of its proper divisors (1).

86418471773 is an equidigital number, since it uses as much as digits as its factorization.

86418471773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 56.

The spelling of 86418471773 in words is "eighty-six billion, four hundred eighteen million, four hundred seventy-one thousand, seven hundred seventy-three".