163640250800 has 60 divisors (see below), whose sum is σ = 423387693120. Its totient is φ = 60421013760.

The previous prime is 163640250791. The next prime is 163640250841. The reversal of 163640250800 is 8052046361.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15729440 + ... + 15739839.

It is an arithmetic number, because the mean of its divisors is an integer number (7056461552).

Almost surely, 2^163640250800 is an apocalyptic number.

163640250800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163640250800 is an abundant number, since it is smaller than the sum of its proper divisors (259747442320).

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

163640250800 is a wasteful number, since it uses less digits than its factorization.

163640250800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31469310 (or 31469299 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 163640250800 in words is "one hundred sixty-three billion, six hundred forty million, two hundred fifty thousand, eight hundred".