163005643012444 has 12 divisors (see below), whose sum is σ = 300273552917800. Its totient is φ = 77213199321648.

The previous prime is 163005643012411. The next prime is 163005643012447. The reversal of 163005643012444 is 444210346500361.

It is a self number, because there is not a number n which added to its sum of digits gives 163005643012444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163005643012447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072405546059 + ... + 1072405546210.

Almost surely, 2^{163005643012444} is an apocalyptic number.

It is an amenable number.

163005643012444 is a deficient number, since it is larger than the sum of its proper divisors (137267909905356).

163005643012444 is a wasteful number, since it uses less digits than its factorization.

163005643012444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144811092292 (or 2144811092290 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 163005643012444 in words is "one hundred sixty-three trillion, five billion, six hundred forty-three million, twelve thousand, four hundred forty-four".