206121659082814 has 16 divisors (see below), whose sum is σ = 309207871038528. Its totient is φ = 103052369083392.

The previous prime is 206121659082811. The next prime is 206121659082847. The reversal of 206121659082814 is 418280956121602.

It is a super-2 number, since 2×206121659082814² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206121659082811) 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, 2117777419 + ... + 2117874745.

It is an arithmetic number, because the mean of its divisors is an integer number (19325491939908).

Almost surely, 2^{206121659082814} is an apocalyptic number.

206121659082814 is a deficient number, since it is larger than the sum of its proper divisors (103086211955714).

206121659082814 is a wasteful number, since it uses less digits than its factorization.

206121659082814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173379.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 206121659082814 in words is "two hundred six trillion, one hundred twenty-one billion, six hundred fifty-nine million, eighty-two thousand, eight hundred fourteen".