163444136424 has 16 divisors (see below), whose sum is σ = 408610341120. Its totient is φ = 54481378800.

The previous prime is 163444136413. The next prime is 163444136489. The reversal of 163444136424 is 424631444361.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405086152 + ... + 3405086199.

It is an arithmetic number, because the mean of its divisors is an integer number (25538146320).

Almost surely, 2^163444136424 is an apocalyptic number.

It is an amenable number.

163444136424 is an abundant number, since it is smaller than the sum of its proper divisors (245166204696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163444136424 is a wasteful number, since it uses less digits than its factorization.

163444136424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810172360 (or 6810172356 counting only the distinct ones).

The product of its digits is 663552, while the sum is 42.

The spelling of 163444136424 in words is "one hundred sixty-three billion, four hundred forty-four million, one hundred thirty-six thousand, four hundred twenty-four".