206422323146 has 8 divisors (see below), whose sum is σ = 333451445124. Its totient is φ = 95271841440.

The previous prime is 206422323109. The next prime is 206422323167. The reversal of 206422323146 is 641323224602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 203956108225 + 2466214921 = 451615^2 + 49661^2 .

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

It is a super-2 number, since 2×206422323146² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3969660035 + ... + 3969660086.

Almost surely, 2^206422323146 is an apocalyptic number.

206422323146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

206422323146 is a deficient number, since it is larger than the sum of its proper divisors (127029121978).

206422323146 is a wasteful number, since it uses less digits than its factorization.

206422323146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939320136.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 206422323146 its reverse (641323224602), we get a palindrome (847745547748).

The spelling of 206422323146 in words is "two hundred six billion, four hundred twenty-two million, three hundred twenty-three thousand, one hundred forty-six".