163685149075 has 12 divisors (see below), whose sum is σ = 231965240080. Its totient is φ = 112241244960.

The previous prime is 163685149057. The next prime is 163685149079. The reversal of 163685149075 is 570941586361.

It is not a de Polignac number, because 163685149075 - 2⁷ = 163685148947 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (163685149079) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 467671680 + ... + 467672029.

Almost surely, 2^163685149075 is an apocalyptic number.

163685149075 is a deficient number, since it is larger than the sum of its proper divisors (68280091005).

163685149075 is an equidigital number, since it uses as much as digits as its factorization.

163685149075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935343726 (or 935343721 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 163685149075 in words is "one hundred sixty-three billion, six hundred eighty-five million, one hundred forty-nine thousand, seventy-five".