206728488026 has 4 divisors (see below), whose sum is σ = 310092732042. Its totient is φ = 103364244012.

The previous prime is 206728488017. The next prime is 206728488067. The reversal of 206728488026 is 620884827602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 189746488801 + 16981999225 = 435599^2 + 130315^2 .

It is an unprimeable number.

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, 51682122005 + ... + 51682122008.

Almost surely, 2^206728488026 is an apocalyptic number.

206728488026 is a deficient number, since it is larger than the sum of its proper divisors (103364244016).

206728488026 is a wasteful number, since it uses less digits than its factorization.

206728488026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103364244015.

The product of its (nonzero) digits is 4128768, while the sum is 53.

The spelling of 206728488026 in words is "two hundred six billion, seven hundred twenty-eight million, four hundred eighty-eight thousand, twenty-six".