3813748822521 has 12 divisors (see below), whose sum is σ = 6009543599280. Its totient is φ = 2311362922680.

The previous prime is 3813748822519. The next prime is 3813748822547. The reversal of 3813748822521 is 1252288473183.

3813748822521 is a `hidden beast` number, since 3 + 8 + 1 + 37 + 4 + 8 + 82 + 2 + 521 = 666.

It is not a de Polignac number, because 3813748822521 - 2¹ = 3813748822519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3813748822321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19261357591 + ... + 19261357788.

It is an arithmetic number, because the mean of its divisors is an integer number (500795299940).

Almost surely, 2^{3813748822521} is an apocalyptic number.

It is an amenable number.

3813748822521 is a deficient number, since it is larger than the sum of its proper divisors (2195794776759).

3813748822521 is a wasteful number, since it uses less digits than its factorization.

3813748822521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38522715396 (or 38522715393 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 3813748822521 in words is "three trillion, eight hundred thirteen billion, seven hundred forty-eight million, eight hundred twenty-two thousand, five hundred twenty-one".