163446105993 has 8 divisors (see below), whose sum is σ = 219371374656. Its totient is φ = 108242454000.

The previous prime is 163446105983. The next prime is 163446106013. The reversal of 163446105993 is 399501644361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163446105993 - 2²⁹ = 162909235081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163446105983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 180403638 + ... + 180404543.

It is an arithmetic number, because the mean of its divisors is an integer number (27421421832).

Almost surely, 2^163446105993 is an apocalyptic number.

It is an amenable number.

163446105993 is a deficient number, since it is larger than the sum of its proper divisors (55925268663).

163446105993 is a wasteful number, since it uses less digits than its factorization.

163446105993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360808335.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 163446105993 in words is "one hundred sixty-three billion, four hundred forty-six million, one hundred five thousand, nine hundred ninety-three".