206313720560 has 20 divisors (see below), whose sum is σ = 479679400488. Its totient is φ = 82525488192.

The previous prime is 206313720523. The next prime is 206313720589. The reversal of 206313720560 is 65027313602.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 206313720560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289460674 + ... + 1289460833.

Almost surely, 2^206313720560 is an apocalyptic number.

206313720560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206313720560 is an abundant number, since it is smaller than the sum of its proper divisors (273365679928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206313720560 is a wasteful number, since it uses less digits than its factorization.

206313720560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578921520 (or 2578921514 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 206313720560 in words is "two hundred six billion, three hundred thirteen million, seven hundred twenty thousand, five hundred sixty".