163606242534641 has 4 divisors (see below), whose sum is σ = 163606881127284. Its totient is φ = 163605603942000.

The previous prime is 163606242534629. The next prime is 163606242534751. The reversal of 163606242534641 is 146435242606361.

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 120678573744400 + 42927668790241 = 10985380^2 + 6551921^2 .

It is a cyclic number.

It is not a de Polignac number, because 163606242534641 - 2⁴² = 159208196023537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163606242530641) 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, 318911870 + ... + 319424471.

It is an arithmetic number, because the mean of its divisors is an integer number (40901720281821).

Almost surely, 2^{163606242534641} is an apocalyptic number.

It is an amenable number.

163606242534641 is a deficient number, since it is larger than the sum of its proper divisors (638592643).

163606242534641 is an equidigital number, since it uses as much as digits as its factorization.

163606242534641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638592642.

The product of its (nonzero) digits is 14929920, while the sum is 53.

The spelling of 163606242534641 in words is "one hundred sixty-three trillion, six hundred six billion, two hundred forty-two million, five hundred thirty-four thousand, six hundred forty-one".