163816712725020 has 96 divisors (see below), whose sum is σ = 465547595724288. Its totient is φ = 43031088452352.

The previous prime is 163816712724991. The next prime is 163816712725027. The reversal of 163816712725020 is 20527217618361.

163816712725020 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 not an unprimeable number, because it can be changed into a prime (163816712725027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129712042 + ... + 130968878.

It is an arithmetic number, because the mean of its divisors is an integer number (4849454122128).

Almost surely, 2^{163816712725020} is an apocalyptic number.

163816712725020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163816712725020 is an abundant number, since it is smaller than the sum of its proper divisors (301730882999268).

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

163816712725020 is a wasteful number, since it uses less digits than its factorization.

163816712725020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289339 (or 1289337 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 163816712725020 in words is "one hundred sixty-three trillion, eight hundred sixteen billion, seven hundred twelve million, seven hundred twenty-five thousand, twenty".