4121440023391 has 2 divisors, whose sum is σ = 4121440023392. Its totient is φ = 4121440023390.

The previous prime is 4121440023331. The next prime is 4121440023419. The reversal of 4121440023391 is 1933200441214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4121440023391 - 2¹⁹ = 4121439499103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121440023331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060720011695 + 2060720011696.

It is an arithmetic number, because the mean of its divisors is an integer number (2060720011696).

Almost surely, 2^{4121440023391} is an apocalyptic number.

4121440023391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121440023391 is an equidigital number, since it uses as much as digits as its factorization.

4121440023391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 4121440023391 in words is "four trillion, one hundred twenty-one billion, four hundred forty million, twenty-three thousand, three hundred ninety-one".