206494746473 has 2 divisors, whose sum is σ = 206494746474. Its totient is φ = 206494746472.

The previous prime is 206494746449. The next prime is 206494746503. The reversal of 206494746473 is 374647494602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110773811929 + 95720934544 = 332827^2 + 309388^2 .

It is a cyclic number.

It is not a de Polignac number, because 206494746473 - 2¹⁰ = 206494745449 is a prime.

It is not a weakly prime, because it can be changed into another prime (206494746433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103247373236 + 103247373237.

It is an arithmetic number, because the mean of its divisors is an integer number (103247373237).

Almost surely, 2^206494746473 is an apocalyptic number.

It is an amenable number.

206494746473 is a deficient number, since it is larger than the sum of its proper divisors (1).

206494746473 is an equidigital number, since it uses as much as digits as its factorization.

206494746473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 56.

The spelling of 206494746473 in words is "two hundred six billion, four hundred ninety-four million, seven hundred forty-six thousand, four hundred seventy-three".