163105820880 has 40 divisors (see below), whose sum is σ = 505628045472. Its totient is φ = 43494885504.

The previous prime is 163105820863. The next prime is 163105820887. The reversal of 163105820880 is 88028501361.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163105820887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339803554 + ... + 339804033.

Almost surely, 2^163105820880 is an apocalyptic number.

163105820880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163105820880 is an abundant number, since it is smaller than the sum of its proper divisors (342522224592).

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

163105820880 is a wasteful number, since it uses less digits than its factorization.

163105820880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679607603 (or 679607597 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 163105820880 in words is "one hundred sixty-three billion, one hundred five million, eight hundred twenty thousand, eight hundred eighty".