206138935258 has 8 divisors (see below), whose sum is σ = 312210426528. Its totient is φ = 102068793084.

The previous prime is 206138935243. The next prime is 206138935259. The reversal of 206138935258 is 852539831602.

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

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 3 ways as a sum of consecutive naturals, for example, 500337016 + ... + 500337427.

It is an arithmetic number, because the mean of its divisors is an integer number (39026303316).

Almost surely, 2^206138935258 is an apocalyptic number.

206138935258 is a deficient number, since it is larger than the sum of its proper divisors (106071491270).

206138935258 is a wasteful number, since it uses less digits than its factorization.

206138935258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000674548.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 206138935258 in words is "two hundred six billion, one hundred thirty-eight million, nine hundred thirty-five thousand, two hundred fifty-eight".