23440906493 has 2 divisors, whose sum is σ = 23440906494. Its totient is φ = 23440906492.

The previous prime is 23440906457. The next prime is 23440906553. The reversal of 23440906493 is 39460904432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20107807204 + 3333099289 = 141802^2 + 57733^2 .

It is a cyclic number.

It is not a de Polignac number, because 23440906493 - 2¹⁶ = 23440840957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23440906453) 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, 11720453246 + 11720453247.

It is an arithmetic number, because the mean of its divisors is an integer number (11720453247).

Almost surely, 2^23440906493 is an apocalyptic number.

It is an amenable number.

23440906493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440906493 is an equidigital number, since it uses as much as digits as its factorization.

23440906493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 23440906493 in words is "twenty-three billion, four hundred forty million, nine hundred six thousand, four hundred ninety-three".