163880385489 has 16 divisors (see below), whose sum is σ = 242887478400. Its totient is φ = 109207815408.

The previous prime is 163880385469. The next prime is 163880385497. The reversal of 163880385489 is 984583088361.

163880385489 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 80 + 3 + 8 + 548 + 9 = 666.

It is not a de Polignac number, because 163880385489 - 2³⁶ = 95160908753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163880385469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205829 + ... + 1334834.

It is an arithmetic number, because the mean of its divisors is an integer number (15180467400).

Almost surely, 2^163880385489 is an apocalyptic number.

It is an amenable number.

163880385489 is a deficient number, since it is larger than the sum of its proper divisors (79007092911).

163880385489 is a wasteful number, since it uses less digits than its factorization.

163880385489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543061 (or 2543055 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 163880385489 in words is "one hundred sixty-three billion, eight hundred eighty million, three hundred eighty-five thousand, four hundred eighty-nine".