163421043460 has 24 divisors (see below), whose sum is σ = 343419471360. Its totient is φ = 65323602144.

The previous prime is 163421043451. The next prime is 163421043529. The reversal of 163421043460 is 64340124361.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771044 + ... + 2829403.

It is an arithmetic number, because the mean of its divisors is an integer number (14309144640).

Almost surely, 2^163421043460 is an apocalyptic number.

163421043460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163421043460 is an abundant number, since it is smaller than the sum of its proper divisors (179998427900).

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

163421043460 is a wasteful number, since it uses less digits than its factorization.

163421043460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601915 (or 5601913 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 163421043460 in words is "one hundred sixty-three billion, four hundred twenty-one million, forty-three thousand, four hundred sixty".