163220064723420 has 96 divisors (see below), whose sum is σ = 457636670443008. Its totient is φ = 43466267642112.

The previous prime is 163220064723367. The next prime is 163220064723517. The reversal of 163220064723420 is 24327460022361.

It is a happy number.

163220064723420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478364199 + ... + 478705281.

It is an arithmetic number, because the mean of its divisors is an integer number (4767048650448).

Almost surely, 2^{163220064723420} is an apocalyptic number.

163220064723420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163220064723420 is an abundant number, since it is smaller than the sum of its proper divisors (294416605719588).

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

163220064723420 is a wasteful number, since it uses less digits than its factorization.

163220064723420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351899 (or 351897 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 42.

The spelling of 163220064723420 in words is "one hundred sixty-three trillion, two hundred twenty billion, sixty-four million, seven hundred twenty-three thousand, four hundred twenty".