86206478573 has 2 divisors, whose sum is σ = 86206478574. Its totient is φ = 86206478572.

The previous prime is 86206478569. The next prime is 86206478623. The reversal of 86206478573 is 37587460268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84403032484 + 1803446089 = 290522^2 + 42467^2 .

It is a cyclic number.

It is not a de Polignac number, because 86206478573 - 2² = 86206478569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86206478563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43103239286 + 43103239287.

It is an arithmetic number, because the mean of its divisors is an integer number (43103239287).

Almost surely, 2^86206478573 is an apocalyptic number.

It is an amenable number.

86206478573 is a deficient number, since it is larger than the sum of its proper divisors (1).

86206478573 is an equidigital number, since it uses as much as digits as its factorization.

86206478573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 86206478573 in words is "eighty-six billion, two hundred six million, four hundred seventy-eight thousand, five hundred seventy-three".