206450221660346 has 16 divisors (see below), whose sum is σ = 313568509585320. Its totient is φ = 101930449420800.

The previous prime is 206450221660259. The next prime is 206450221660391. The reversal of 206450221660346 is 643066122054602.

It can be written as a sum of positive squares in 4 ways, for example, as 113553298387321 + 92896923273025 = 10656139^2 + 9638305^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206450221660346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765937055 + ... + 766206546.

Almost surely, 2^{206450221660346} is an apocalyptic number.

206450221660346 is a deficient number, since it is larger than the sum of its proper divisors (107118287924974).

206450221660346 is a wasteful number, since it uses less digits than its factorization.

206450221660346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532144449.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 206450221660346 in words is "two hundred six trillion, four hundred fifty billion, two hundred twenty-one million, six hundred sixty thousand, three hundred forty-six".