3988785997197 has 64 divisors (see below), whose sum is σ = 6209473536000. Its totient is φ = 2525770646784.

The previous prime is 3988785997159. The next prime is 3988785997213. The reversal of 3988785997197 is 7917995878893.

3988785997197 is a `hidden beast` number, since 3 + 9 + 8 + 8 + 7 + 8 + 599 + 7 + 1 + 9 + 7 = 666.

It is not a de Polignac number, because 3988785997197 - 2¹¹ = 3988785995149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988785997117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104621304 + ... + 104659422.

It is an arithmetic number, because the mean of its divisors is an integer number (97023024000).

Almost surely, 2^{3988785997197} is an apocalyptic number.

It is an amenable number.

3988785997197 is a deficient number, since it is larger than the sum of its proper divisors (2220687538803).

3988785997197 is a wasteful number, since it uses less digits than its factorization.

3988785997197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39327 (or 39321 counting only the distinct ones).

The product of its digits is 17283248640, while the sum is 90.

The spelling of 3988785997197 in words is "three trillion, nine hundred eighty-eight billion, seven hundred eighty-five million, nine hundred ninety-seven thousand, one hundred ninety-seven".