206140556526 has 8 divisors (see below), whose sum is σ = 412281113064. Its totient is φ = 68713518840.

The previous prime is 206140556521. The next prime is 206140556527. The reversal of 206140556526 is 625655041602.

It is a happy number.

206140556526 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

206140556526 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206140556521) 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, 17178379705 + ... + 17178379716.

It is an arithmetic number, because the mean of its divisors is an integer number (51535139133).

Almost surely, 2^206140556526 is an apocalyptic number.

206140556526 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206140556526 is a wasteful number, since it uses less digits than its factorization.

206140556526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34356759426.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 206140556526 in words is "two hundred six billion, one hundred forty million, five hundred fifty-six thousand, five hundred twenty-six".