3848643111661 has 4 divisors (see below), whose sum is σ = 3848648696800. Its totient is φ = 3848637526524.

The previous prime is 3848643111653. The next prime is 3848643111671. The reversal of 3848643111661 is 1661113468483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3848643111661 - 2³ = 3848643111653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3848643111599 and 3848643111608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3848643111631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1584831 + ... + 3195148.

It is an arithmetic number, because the mean of its divisors is an integer number (962162174200).

Almost surely, 2^{3848643111661} is an apocalyptic number.

It is an amenable number.

3848643111661 is a deficient number, since it is larger than the sum of its proper divisors (5585139).

3848643111661 is an equidigital number, since it uses as much as digits as its factorization.

3848643111661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5585138.

The product of its digits is 1990656, while the sum is 52.

The spelling of 3848643111661 in words is "three trillion, eight hundred forty-eight billion, six hundred forty-three million, one hundred eleven thousand, six hundred sixty-one".