206406838028 has 6 divisors (see below), whose sum is σ = 361211966556. Its totient is φ = 103203419012.

The previous prime is 206406838021. The next prime is 206406838049. The reversal of 206406838028 is 820838604602.

It is not an unprimeable number, because it can be changed into a prime (206406838021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800854750 + ... + 25800854757.

It is an arithmetic number, because the mean of its divisors is an integer number (60201994426).

Almost surely, 2^206406838028 is an apocalyptic number.

It is an amenable number.

206406838028 is a deficient number, since it is larger than the sum of its proper divisors (154805128528).

206406838028 is a wasteful number, since it uses less digits than its factorization.

206406838028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51601709511 (or 51601709509 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 206406838028 in words is "two hundred six billion, four hundred six million, eight hundred thirty-eight thousand, twenty-eight".