3985305872117 has 8 divisors (see below), whose sum is σ = 4044556514880. Its totient is φ = 3926322727360.

The previous prime is 3985305872099. The next prime is 3985305872131. The reversal of 3985305872117 is 7112785035893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3985305872117 - 2²⁰ = 3985304823541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985305872137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66844484 + ... + 66904077.

It is an arithmetic number, because the mean of its divisors is an integer number (505569564360).

Almost surely, 2^{3985305872117} is an apocalyptic number.

It is an amenable number.

3985305872117 is a deficient number, since it is larger than the sum of its proper divisors (59250642763).

3985305872117 is a wasteful number, since it uses less digits than its factorization.

3985305872117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133749003.

The product of its (nonzero) digits is 12700800, while the sum is 59.

The spelling of 3985305872117 in words is "three trillion, nine hundred eighty-five billion, three hundred five million, eight hundred seventy-two thousand, one hundred seventeen".