23044340400421 has 2 divisors, whose sum is σ = 23044340400422. Its totient is φ = 23044340400420.

The previous prime is 23044340400407. The next prime is 23044340400467. The reversal of 23044340400421 is 12400404344032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16737140121025 + 6307200279396 = 4091105^2 + 2511414^2 .

It is a cyclic number.

It is not a de Polignac number, because 23044340400421 - 2¹⁹ = 23044339876133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23044340400721) 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, 11522170200210 + 11522170200211.

It is an arithmetic number, because the mean of its divisors is an integer number (11522170200211).

Almost surely, 2^{23044340400421} is an apocalyptic number.

It is an amenable number.

23044340400421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23044340400421 is an equidigital number, since it uses as much as digits as its factorization.

23044340400421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 23044340400421 its reverse (12400404344032), we get a palindrome (35444744744453).

The spelling of 23044340400421 in words is "twenty-three trillion, forty-four billion, three hundred forty million, four hundred thousand, four hundred twenty-one".