163401244668 has 18 divisors (see below), whose sum is σ = 413042035224. Its totient is φ = 54467081544.

The previous prime is 163401244661. The next prime is 163401244681. The reversal of 163401244668 is 866442104361.

163401244668 is a `hidden beast` number, since 1 + 6 + 340 + 1 + 244 + 6 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163401244661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2269461696 + ... + 2269461767.

Almost surely, 2^163401244668 is an apocalyptic number.

163401244668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

163401244668 is an abundant number, since it is smaller than the sum of its proper divisors (249640790556).

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

163401244668 is a wasteful number, since it uses less digits than its factorization.

163401244668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4538923473 (or 4538923468 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 163401244668 in words is "one hundred sixty-three billion, four hundred one million, two hundred forty-four thousand, six hundred sixty-eight".