3861117440782 has 12 divisors (see below), whose sum is σ = 6737255942760. Its totient is φ = 1654764617436.

The previous prime is 3861117440753. The next prime is 3861117440821. The reversal of 3861117440782 is 2870447111683.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 19699578682 + ... + 19699578877.

It is an arithmetic number, because the mean of its divisors is an integer number (561437995230).

Almost surely, 2^{3861117440782} is an apocalyptic number.

3861117440782 is a deficient number, since it is larger than the sum of its proper divisors (2876138501978).

3861117440782 is a wasteful number, since it uses less digits than its factorization.

3861117440782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39399157575 (or 39399157568 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 3861117440782 in words is "three trillion, eight hundred sixty-one billion, one hundred seventeen million, four hundred forty thousand, seven hundred eighty-two".