163361623553 has 12 divisors (see below), whose sum is σ = 174189610980. Its totient is φ = 153168109056.

The previous prime is 163361623541. The next prime is 163361623597. The reversal of 163361623553 is 355326163361.

It can be written as a sum of positive squares in 2 ways, for example, as 43744559104 + 119617064449 = 209152^2 + 345857^2 .

It is not a de Polignac number, because 163361623553 - 2²⁴ = 163344846337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163361623253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2297588 + ... + 2367621.

It is an arithmetic number, because the mean of its divisors is an integer number (14515800915).

Almost surely, 2^163361623553 is an apocalyptic number.

It is an amenable number.

163361623553 is a deficient number, since it is larger than the sum of its proper divisors (10827987427).

163361623553 is an equidigital number, since it uses as much as digits as its factorization.

163361623553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665344 (or 4665325 counting only the distinct ones).

The product of its digits is 874800, while the sum is 44.

The spelling of 163361623553 in words is "one hundred sixty-three billion, three hundred sixty-one million, six hundred twenty-three thousand, five hundred fifty-three".