206562856404 has 12 divisors (see below), whose sum is σ = 481979998304. Its totient is φ = 68854285464.

The previous prime is 206562856361. The next prime is 206562856427. The reversal of 206562856404 is 404658265602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×206562856404² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8606785672 + ... + 8606785695.

Almost surely, 2^206562856404 is an apocalyptic number.

It is an amenable number.

206562856404 is an abundant number, since it is smaller than the sum of its proper divisors (275417141900).

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

206562856404 is a wasteful number, since it uses less digits than its factorization.

206562856404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213571374 (or 17213571372 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 206562856404 in words is "two hundred six billion, five hundred sixty-two million, eight hundred fifty-six thousand, four hundred four".