206138935059 has 8 divisors (see below), whose sum is σ = 274959666432. Its totient is φ = 137372080200.

The previous prime is 206138935043. The next prime is 206138935061. The reversal of 206138935059 is 950539831602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206138935059 - 2⁴ = 206138935043 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (206138935259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13460199 + ... + 13475504.

It is an arithmetic number, because the mean of its divisors is an integer number (34369958304).

Almost surely, 2^206138935059 is an apocalyptic number.

206138935059 is a deficient number, since it is larger than the sum of its proper divisors (68820731373).

206138935059 is a wasteful number, since it uses less digits than its factorization.

206138935059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26938257.

The product of its (nonzero) digits is 1749600, while the sum is 51.

The spelling of 206138935059 in words is "two hundred six billion, one hundred thirty-eight million, nine hundred thirty-five thousand, fifty-nine".