206806504028 has 12 divisors (see below), whose sum is σ = 361916184840. Its totient is φ = 103401879792.

The previous prime is 206806504027. The next prime is 206806504063. The reversal of 206806504028 is 820405608602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206806504027) 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, 44750 + ... + 644682.

It is an arithmetic number, because the mean of its divisors is an integer number (30159682070).

Almost surely, 2^206806504028 is an apocalyptic number.

It is an amenable number.

206806504028 is a deficient number, since it is larger than the sum of its proper divisors (155109680812).

206806504028 is a wasteful number, since it uses less digits than its factorization.

206806504028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686116 (or 686114 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 206806504028 in words is "two hundred six billion, eight hundred six million, five hundred four thousand, twenty-eight".