163322216426 has 4 divisors (see below), whose sum is σ = 244983324642. Its totient is φ = 81661108212.

The previous prime is 163322216423. The next prime is 163322216441. The reversal of 163322216426 is 624612223361.

163322216426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 161945880625 + 1376335801 = 402425^2 + 37099^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 163322216426.

It is not an unprimeable number, because it can be changed into a prime (163322216423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40830554105 + ... + 40830554108.

Almost surely, 2^163322216426 is an apocalyptic number.

163322216426 is a deficient number, since it is larger than the sum of its proper divisors (81661108216).

163322216426 is an equidigital number, since it uses as much as digits as its factorization.

163322216426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661108215.

The product of its digits is 124416, while the sum is 38.

Adding to 163322216426 its reverse (624612223361), we get a palindrome (787934439787).

The spelling of 163322216426 in words is "one hundred sixty-three billion, three hundred twenty-two million, two hundred sixteen thousand, four hundred twenty-six".