206161447773 has 16 divisors (see below), whose sum is σ = 287745564672. Its totient is φ = 131134038000.

The previous prime is 206161447757. The next prime is 206161447787. The reversal of 206161447773 is 377744161602.

It is not a de Polignac number, because 206161447773 - 2⁴ = 206161447757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206161447073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15604593 + ... + 15617798.

It is an arithmetic number, because the mean of its divisors is an integer number (17984097792).

Almost surely, 2^206161447773 is an apocalyptic number.

It is an amenable number.

206161447773 is a deficient number, since it is larger than the sum of its proper divisors (81584116899).

206161447773 is a wasteful number, since it uses less digits than its factorization.

206161447773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31222496.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 206161447773 in words is "two hundred six billion, one hundred sixty-one million, four hundred forty-seven thousand, seven hundred seventy-three".