3444043138421 has 2 divisors, whose sum is σ = 3444043138422. Its totient is φ = 3444043138420.

The previous prime is 3444043138411. The next prime is 3444043138423. The reversal of 3444043138421 is 1248313404443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2699084266321 + 744958872100 = 1642889^2 + 863110^2 .

It is a cyclic number.

It is not a de Polignac number, because 3444043138421 - 2¹⁰ = 3444043137397 is a prime.

It is a super-2 number, since 2×3444043138421² (a number of 26 digits) contains 22 as substring.

Together with 3444043138423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3444043138423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722021569210 + 1722021569211.

It is an arithmetic number, because the mean of its divisors is an integer number (1722021569211).

Almost surely, 2^{3444043138421} is an apocalyptic number.

It is an amenable number.

3444043138421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3444043138421 is an equidigital number, since it uses as much as digits as its factorization.

3444043138421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 3444043138421 in words is "three trillion, four hundred forty-four billion, forty-three million, one hundred thirty-eight thousand, four hundred twenty-one".