206105123346 has 16 divisors (see below), whose sum is σ = 425507351808. Its totient is φ = 66485523600.

The previous prime is 206105123339. The next prime is 206105123353. The reversal of 206105123346 is 643321501602.

It is an interprime number because it is at equal distance from previous prime (206105123339) and next prime (206105123353).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554045845 + ... + 554046216.

It is an arithmetic number, because the mean of its divisors is an integer number (26594209488).

Almost surely, 2^206105123346 is an apocalyptic number.

206105123346 is an abundant number, since it is smaller than the sum of its proper divisors (219402228462).

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

206105123346 is a wasteful number, since it uses less digits than its factorization.

206105123346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108092097.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 206105123346 its reverse (643321501602), we get a palindrome (849426624948).

The spelling of 206105123346 in words is "two hundred six billion, one hundred five million, one hundred twenty-three thousand, three hundred forty-six".