23343140917721 has 2 divisors, whose sum is σ = 23343140917722. Its totient is φ = 23343140917720.

The previous prime is 23343140917693. The next prime is 23343140917777. The reversal of 23343140917721 is 12771904134332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21410387562496 + 1932753355225 = 4627136^2 + 1390235^2 .

It is a cyclic number.

It is not a de Polignac number, because 23343140917721 - 2¹⁴ = 23343140901337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23343140914721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11671570458860 + 11671570458861.

It is an arithmetic number, because the mean of its divisors is an integer number (11671570458861).

Almost surely, 2^{23343140917721} is an apocalyptic number.

It is an amenable number.

23343140917721 is a deficient number, since it is larger than the sum of its proper divisors (1).

23343140917721 is an equidigital number, since it uses as much as digits as its factorization.

23343140917721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 23343140917721 in words is "twenty-three trillion, three hundred forty-three billion, one hundred forty million, nine hundred seventeen thousand, seven hundred twenty-one".