3861842404212 has 96 divisors (see below), whose sum is σ = 10817023176960. Its totient is φ = 1184438298240.

The previous prime is 3861842404187. The next prime is 3861842404213. The reversal of 3861842404212 is 2124042481683.

3861842404212 is a `hidden beast` number, since 3 + 8 + 6 + 1 + 8 + 424 + 0 + 4 + 212 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861842404213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3985543 + ... + 4858830.

It is an arithmetic number, because the mean of its divisors is an integer number (112677324760).

Almost surely, 2^{3861842404212} is an apocalyptic number.

It is an amenable number.

3861842404212 is an abundant number, since it is smaller than the sum of its proper divisors (6955180772748).

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

3861842404212 is a wasteful number, since it uses less digits than its factorization.

3861842404212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8844710 (or 8844702 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

Adding to 3861842404212 its reverse (2124042481683), we get a palindrome (5985884885895).

The spelling of 3861842404212 in words is "three trillion, eight hundred sixty-one billion, eight hundred forty-two million, four hundred four thousand, two hundred twelve".