14345405311421 has 16 divisors (see below), whose sum is σ = 14450658316080. Its totient is φ = 14240334850560.

The previous prime is 14345405311409. The next prime is 14345405311487. The reversal of 14345405311421 is 12411350454341.

It can be written as a sum of positive squares in 8 ways, for example, as 517084675396 + 13828320636025 = 719086^2 + 3718645^2 .

It is a cyclic number.

It is not a de Polignac number, because 14345405311421 - 2⁶ = 14345405311357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14345405310421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840033935 + ... + 840051011.

It is an arithmetic number, because the mean of its divisors is an integer number (903166144755).

Almost surely, 2^{14345405311421} is an apocalyptic number.

It is an amenable number.

14345405311421 is a deficient number, since it is larger than the sum of its proper divisors (105253004659).

14345405311421 is a wasteful number, since it uses less digits than its factorization.

14345405311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22064.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 14345405311421 its reverse (12411350454341), we get a palindrome (26756755765762).

The spelling of 14345405311421 in words is "fourteen trillion, three hundred forty-five billion, four hundred five million, three hundred eleven thousand, four hundred twenty-one".