23404320020261 has 2 divisors, whose sum is σ = 23404320020262. Its totient is φ = 23404320020260.

The previous prime is 23404320020201. The next prime is 23404320020317. The reversal of 23404320020261 is 16202002340432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23261386876036 + 142933144225 = 4823006^2 + 378065^2 .

It is a cyclic number.

It is not a de Polignac number, because 23404320020261 - 2¹⁴ = 23404320003877 is a prime.

It is a super-2 number, since 2×23404320020261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23404320020201) 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, 11702160010130 + 11702160010131.

It is an arithmetic number, because the mean of its divisors is an integer number (11702160010131).

Almost surely, 2^{23404320020261} is an apocalyptic number.

It is an amenable number.

23404320020261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23404320020261 is an equidigital number, since it uses as much as digits as its factorization.

23404320020261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 23404320020261 its reverse (16202002340432), we get a palindrome (39606322360693).

The spelling of 23404320020261 in words is "twenty-three trillion, four hundred four billion, three hundred twenty million, twenty thousand, two hundred sixty-one".