23543434513 has 2 divisors, whose sum is σ = 23543434514. Its totient is φ = 23543434512.

The previous prime is 23543434511. The next prime is 23543434529. The reversal of 23543434513 is 31543434532.

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., 21038632209 + 2504802304 = 145047^2 + 50048^2 .

It is a cyclic number.

It is not a de Polignac number, because 23543434513 - 2¹ = 23543434511 is a prime.

Together with 23543434511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23543434511) 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, 11771717256 + 11771717257.

It is an arithmetic number, because the mean of its divisors is an integer number (11771717257).

Almost surely, 2^23543434513 is an apocalyptic number.

It is an amenable number.

23543434513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23543434513 is an equidigital number, since it uses as much as digits as its factorization.

23543434513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 37.

The spelling of 23543434513 in words is "twenty-three billion, five hundred forty-three million, four hundred thirty-four thousand, five hundred thirteen".