163186172401 has 12 divisors (see below), whose sum is σ = 189896986560. Its totient is φ = 139823628840.

The previous prime is 163186172399. The next prime is 163186172407. The reversal of 163186172401 is 104271681361.

It is not a de Polignac number, because 163186172401 - 2¹ = 163186172399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163186172407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 459861 + ... + 733378.

It is an arithmetic number, because the mean of its divisors is an integer number (15824748880).

Almost surely, 2^163186172401 is an apocalyptic number.

It is an amenable number.

163186172401 is a deficient number, since it is larger than the sum of its proper divisors (26710814159).

163186172401 is a wasteful number, since it uses less digits than its factorization.

163186172401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196044 (or 1196037 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 163186172401 in words is "one hundred sixty-three billion, one hundred eighty-six million, one hundred seventy-two thousand, four hundred one".