3921144844325 has 6 divisors (see below), whose sum is σ = 4862219606994. Its totient is φ = 3136915875440.

The previous prime is 3921144844291. The next prime is 3921144844333. The reversal of 3921144844325 is 5234484411293.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1378271304004 + 2542873540321 = 1173998^2 + 1594639^2 .

It is not a de Polignac number, because 3921144844325 - 2⁸ = 3921144844069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78422896862 + ... + 78422896911.

It is an arithmetic number, because the mean of its divisors is an integer number (810369934499).

Almost surely, 2^{3921144844325} is an apocalyptic number.

It is an amenable number.

3921144844325 is a deficient number, since it is larger than the sum of its proper divisors (941074762669).

3921144844325 is a wasteful number, since it uses less digits than its factorization.

3921144844325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156845793783 (or 156845793778 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 3921144844325 in words is "three trillion, nine hundred twenty-one billion, one hundred forty-four million, eight hundred forty-four thousand, three hundred twenty-five".