163506363611413 has 4 divisors (see below), whose sum is σ = 170615335942368. Its totient is φ = 156397391280460.

The previous prime is 163506363611267. The next prime is 163506363611489. The reversal of 163506363611413 is 314116363605361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163506363611413 - 2³³ = 163497773676821 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 (163506363614413) 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, 3554486165443 + ... + 3554486165488.

It is an arithmetic number, because the mean of its divisors is an integer number (42653833985592).

Almost surely, 2^{163506363611413} is an apocalyptic number.

It is an amenable number.

163506363611413 is a deficient number, since it is larger than the sum of its proper divisors (7108972330955).

163506363611413 is an equidigital number, since it uses as much as digits as its factorization.

163506363611413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108972330954.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The spelling of 163506363611413 in words is "one hundred sixty-three trillion, five hundred six billion, three hundred sixty-three million, six hundred eleven thousand, four hundred thirteen".