3871645446361 has 16 divisors (see below), whose sum is σ = 4827072279168. Its totient is φ = 3016812988800.

The previous prime is 3871645446349. The next prime is 3871645446371. The reversal of 3871645446361 is 1636445461783.

It is a cyclic number.

It is not a de Polignac number, because 3871645446361 - 2⁹ = 3871645445849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3871645446296 and 3871645446305.

It is not an unprimeable number, because it can be changed into a prime (3871645446301) 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, 4232301 + ... + 5065141.

It is an arithmetic number, because the mean of its divisors is an integer number (301692017448).

Almost surely, 2^{3871645446361} is an apocalyptic number.

It is an amenable number.

3871645446361 is a deficient number, since it is larger than the sum of its proper divisors (955426832807).

3871645446361 is a wasteful number, since it uses less digits than its factorization.

3871645446361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893232.

The product of its digits is 34836480, while the sum is 58.

The spelling of 3871645446361 in words is "three trillion, eight hundred seventy-one billion, six hundred forty-five million, four hundred forty-six thousand, three hundred sixty-one".