163872055506 has 8 divisors (see below), whose sum is σ = 327744111024. Its totient is φ = 54624018500.

The previous prime is 163872055481. The next prime is 163872055537. The reversal of 163872055506 is 605550278361.

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

163872055506 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13656004620 + ... + 13656004631.

It is an arithmetic number, because the mean of its divisors is an integer number (40968013878).

Almost surely, 2^163872055506 is an apocalyptic number.

163872055506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

163872055506 is a wasteful number, since it uses less digits than its factorization.

163872055506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27312009256.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 163872055506 in words is "one hundred sixty-three billion, eight hundred seventy-two million, fifty-five thousand, five hundred six".