163112890491 has 12 divisors (see below), whose sum is σ = 237692532168. Its totient is φ = 107779608384.

The previous prime is 163112890477. The next prime is 163112890511. The reversal of 163112890491 is 194098211361.

163112890491 is a `hidden beast` number, since 1 + 6 + 31 + 128 + 9 + 0 + 491 = 666.

It is not a de Polignac number, because 163112890491 - 2¹⁵ = 163112857723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163112894491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80192145 + ... + 80194178.

It is an arithmetic number, because the mean of its divisors is an integer number (19807711014).

Almost surely, 2^163112890491 is an apocalyptic number.

163112890491 is a deficient number, since it is larger than the sum of its proper divisors (74579641677).

163112890491 is a wasteful number, since it uses less digits than its factorization.

163112890491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160386442 (or 160386439 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 163112890491 in words is "one hundred sixty-three billion, one hundred twelve million, eight hundred ninety thousand, four hundred ninety-one".