3997145494185 has 32 divisors (see below), whose sum is σ = 6543730990080. Its totient is φ = 2082821542848.

The previous prime is 3997145494169. The next prime is 3997145494249. The reversal of 3997145494185 is 5814945417993.

3997145494185 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3997145494185 - 2⁴ = 3997145494169 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 13710189 + ... + 13998698.

It is an arithmetic number, because the mean of its divisors is an integer number (204491593440).

Almost surely, 2^{3997145494185} is an apocalyptic number.

It is an amenable number.

3997145494185 is a deficient number, since it is larger than the sum of its proper divisors (2546585495895).

3997145494185 is a wasteful number, since it uses less digits than its factorization.

3997145494185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27709117.

The product of its digits is 195955200, while the sum is 69.

The spelling of 3997145494185 in words is "three trillion, nine hundred ninety-seven billion, one hundred forty-five million, four hundred ninety-four thousand, one hundred eighty-five".