163998813364 has 12 divisors (see below), whose sum is σ = 287000957824. Its totient is φ = 81998539704.

The previous prime is 163998813359. The next prime is 163998813379. The reversal of 163998813364 is 463318899361.

163998813364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163998813364² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410659 + ... + 704725.

Almost surely, 2^163998813364 is an apocalyptic number.

It is an amenable number.

163998813364 is a deficient number, since it is larger than the sum of its proper divisors (123002144460).

163998813364 is a wasteful number, since it uses less digits than its factorization.

163998813364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433494 (or 433492 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 61.

The spelling of 163998813364 in words is "one hundred sixty-three billion, nine hundred ninety-eight million, eight hundred thirteen thousand, three hundred sixty-four".