163666500052 has 48 divisors (see below), whose sum is σ = 313083412992. Its totient is φ = 74244250080.

The previous prime is 163666500047. The next prime is 163666500079. The reversal of 163666500052 is 250005666361.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 163666499978 and 163666500014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81709683 + ... + 81711685.

It is an arithmetic number, because the mean of its divisors is an integer number (6522571104).

Almost surely, 2^163666500052 is an apocalyptic number.

It is an amenable number.

163666500052 is a deficient number, since it is larger than the sum of its proper divisors (149416912940).

163666500052 is a wasteful number, since it uses less digits than its factorization.

163666500052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828 (or 4826 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 163666500052 in words is "one hundred sixty-three billion, six hundred sixty-six million, five hundred thousand, fifty-two".