23738886421 has 2 divisors, whose sum is σ = 23738886422. Its totient is φ = 23738886420.

The previous prime is 23738886403. The next prime is 23738886443. The reversal of 23738886421 is 12468883732.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19849992100 + 3888894321 = 140890^2 + 62361^2 .

It is a cyclic number.

It is not a de Polignac number, because 23738886421 - 2¹⁷ = 23738755349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23738886221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11869443210 + 11869443211.

It is an arithmetic number, because the mean of its divisors is an integer number (11869443211).

Almost surely, 2^23738886421 is an apocalyptic number.

It is an amenable number.

23738886421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23738886421 is an equidigital number, since it uses as much as digits as its factorization.

23738886421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 52.

The spelling of 23738886421 in words is "twenty-three billion, seven hundred thirty-eight million, eight hundred eighty-six thousand, four hundred twenty-one".