163206226013 has 4 divisors (see below), whose sum is σ = 168834026940. Its totient is φ = 157578425088.

The previous prime is 163206225983. The next prime is 163206226021. The reversal of 163206226013 is 310622602361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103495393849 + 59710832164 = 321707^2 + 244358^2 .

It is a cyclic number.

It is not a de Polignac number, because 163206226013 - 2¹² = 163206221917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163206226613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813900420 + ... + 2813900477.

It is an arithmetic number, because the mean of its divisors is an integer number (42208506735).

Almost surely, 2^163206226013 is an apocalyptic number.

It is an amenable number.

163206226013 is a deficient number, since it is larger than the sum of its proper divisors (5627800927).

163206226013 is an equidigital number, since it uses as much as digits as its factorization.

163206226013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5627800926.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 163206226013 its reverse (310622602361), we get a palindrome (473828828374).

The spelling of 163206226013 in words is "one hundred sixty-three billion, two hundred six million, two hundred twenty-six thousand, thirteen".