4405541116421 has 2 divisors, whose sum is σ = 4405541116422. Its totient is φ = 4405541116420.

The previous prime is 4405541116357. The next prime is 4405541116469. The reversal of 4405541116421 is 1246111455044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2351665188196 + 2053875928225 = 1533514^2 + 1433135^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405541116421 - 2⁶ = 4405541116357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4405541116621) 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 as a sum of consecutive naturals, namely, 2202770558210 + 2202770558211.

It is an arithmetic number, because the mean of its divisors is an integer number (2202770558211).

Almost surely, 2^{4405541116421} is an apocalyptic number.

It is an amenable number.

4405541116421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4405541116421 is an equidigital number, since it uses as much as digits as its factorization.

4405541116421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 4405541116421 in words is "four trillion, four hundred five billion, five hundred forty-one million, one hundred sixteen thousand, four hundred twenty-one".