163946716920 has 96 divisors (see below), whose sum is σ = 608944957920. Its totient is φ = 37473534720.

The previous prime is 163946716909. The next prime is 163946716939. The reversal of 163946716920 is 29617649361.

163946716920 is a `hidden beast` number, since 16 + 3 + 9 + 467 + 169 + 2 + 0 = 666.

It is a super-2 number, since 2×163946716920² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32526591 + ... + 32531630.

It is an arithmetic number, because the mean of its divisors is an integer number (6343176645).

Almost surely, 2^163946716920 is an apocalyptic number.

163946716920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163946716920 is an abundant number, since it is smaller than the sum of its proper divisors (444998241000).

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

163946716920 is a wasteful number, since it uses less digits than its factorization.

163946716920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65058245 (or 65058238 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 163946716920 in words is "one hundred sixty-three billion, nine hundred forty-six million, seven hundred sixteen thousand, nine hundred twenty".