3865314446221 has 16 divisors (see below), whose sum is σ = 4094784576000. Its totient is φ = 3636078117120.

The previous prime is 3865314446177. The next prime is 3865314446233. The reversal of 3865314446221 is 1226444135683.

It is a cyclic number.

It is not a de Polignac number, because 3865314446221 - 2⁷ = 3865314446093 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 (3865314446291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429141100 + ... + 429150106.

It is an arithmetic number, because the mean of its divisors is an integer number (255924036000).

Almost surely, 2^{3865314446221} is an apocalyptic number.

It is an amenable number.

3865314446221 is a deficient number, since it is larger than the sum of its proper divisors (229470129779).

3865314446221 is a wasteful number, since it uses less digits than its factorization.

3865314446221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164.

The product of its digits is 3317760, while the sum is 49.

The spelling of 3865314446221 in words is "three trillion, eight hundred sixty-five billion, three hundred fourteen million, four hundred forty-six thousand, two hundred twenty-one".