3841781387776 has 80 divisors (see below), whose sum is σ = 7705830420288. Its totient is φ = 1913448960000.

The previous prime is 3841781387713. The next prime is 3841781387777. The reversal of 3841781387776 is 6777831871483.

It is not an unprimeable number, because it can be changed into a prime (3841781387777) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 269572651 + ... + 269586901.

Almost surely, 2^{3841781387776} 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 3841781387776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3852915210144).

3841781387776 is an abundant number, since it is smaller than the sum of its proper divisors (3864049032512).

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

3841781387776 is a wasteful number, since it uses less digits than its factorization.

3841781387776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273 (or 16257 counting only the distinct ones).

The product of its digits is 265531392, while the sum is 70.

The spelling of 3841781387776 in words is "three trillion, eight hundred forty-one billion, seven hundred eighty-one million, three hundred eighty-seven thousand, seven hundred seventy-six".