86866940207473 has 2 divisors, whose sum is σ = 86866940207474. Its totient is φ = 86866940207472.

The previous prime is 86866940207431. The next prime is 86866940207557. The reversal of 86866940207473 is 37470204966868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58152474853729 + 28714465353744 = 7625777^2 + 5358588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86866940207473 is a prime.

It is not a weakly prime, because it can be changed into another prime (86866940201473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43433470103736 + 43433470103737.

It is an arithmetic number, because the mean of its divisors is an integer number (43433470103737).

Almost surely, 2^{86866940207473} is an apocalyptic number.

It is an amenable number.

86866940207473 is a deficient number, since it is larger than the sum of its proper divisors (1).

86866940207473 is an equidigital number, since it uses as much as digits as its factorization.

86866940207473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 585252864, while the sum is 70.

The spelling of 86866940207473 in words is "eighty-six trillion, eight hundred sixty-six billion, nine hundred forty million, two hundred seven thousand, four hundred seventy-three".