208106902329 has 16 divisors (see below), whose sum is σ = 284747096832. Its totient is φ = 135120919248.

The previous prime is 208106902319. The next prime is 208106902337. The reversal of 208106902329 is 923209601802.

It is not a de Polignac number, because 208106902329 - 2¹³ = 208106894137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208106902319) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2279779 + ... + 2369304.

It is an arithmetic number, because the mean of its divisors is an integer number (17796693552).

Almost surely, 2^208106902329 is an apocalyptic number.

It is an amenable number.

208106902329 is a deficient number, since it is larger than the sum of its proper divisors (76640194503).

208106902329 is a wasteful number, since it uses less digits than its factorization.

208106902329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649476.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 208106902329 in words is "two hundred eight billion, one hundred six million, nine hundred two thousand, three hundred twenty-nine".