3861220904704 has 72 divisors (see below), whose sum is σ = 7863869688192. Its totient is φ = 1891739888640.

The previous prime is 3861220904693. The next prime is 3861220904729. The reversal of 3861220904704 is 4074090221683.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2311047 + ... + 3614329.

It is an arithmetic number, because the mean of its divisors is an integer number (109220412336).

Almost surely, 2^{3861220904704} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3861220904704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3931934844096).

3861220904704 is an abundant number, since it is smaller than the sum of its proper divisors (4002648783488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3861220904704 is a wasteful number, since it uses less digits than its factorization.

3861220904704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303533 (or 1303519 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 3861220904704 in words is "three trillion, eight hundred sixty-one billion, two hundred twenty million, nine hundred four thousand, seven hundred four".