3865472660885 has 16 divisors (see below), whose sum is σ = 5060342566080. Its totient is φ = 2811204263040.

The previous prime is 3865472660879. The next prime is 3865472660887. The reversal of 3865472660885 is 5880662745683.

It is a de Polignac number, because none of the positive numbers 2^k-3865472660885 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865472660887) 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 15 ways as a sum of consecutive naturals, for example, 2773961 + ... + 3927569.

It is an arithmetic number, because the mean of its divisors is an integer number (316271410380).

Almost surely, 2^{3865472660885} is an apocalyptic number.

It is an amenable number.

3865472660885 is a deficient number, since it is larger than the sum of its proper divisors (1194869905195).

3865472660885 is a wasteful number, since it uses less digits than its factorization.

3865472660885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214548.

The product of its (nonzero) digits is 464486400, while the sum is 68.

The spelling of 3865472660885 in words is "three trillion, eight hundred sixty-five billion, four hundred seventy-two million, six hundred sixty thousand, eight hundred eighty-five".