206642003635604 has 12 divisors (see below), whose sum is σ = 361782043645428. Its totient is φ = 103275705451200.

The previous prime is 206642003635583. The next prime is 206642003635609. The reversal of 206642003635604 is 406536300246602.

It can be written as a sum of positive squares in 2 ways, for example, as 169148180467204 + 37493823168400 = 13005698^2 + 6123220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206642003635609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11324081387 + ... + 11324099634.

It is an arithmetic number, because the mean of its divisors is an integer number (30148503637119).

Almost surely, 2^{206642003635604} is an apocalyptic number.

It is an amenable number.

206642003635604 is a deficient number, since it is larger than the sum of its proper divisors (155140040009824).

206642003635604 is a wasteful number, since it uses less digits than its factorization.

206642003635604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22648183306 (or 22648183304 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 206642003635604 in words is "two hundred six trillion, six hundred forty-two billion, three million, six hundred thirty-five thousand, six hundred four".