23513543507 has 2 divisors, whose sum is σ = 23513543508. Its totient is φ = 23513543506.

The previous prime is 23513543503. The next prime is 23513543513. The reversal of 23513543507 is 70534531532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23513543507 - 2² = 23513543503 is a prime.

It is not a weakly prime, because it can be changed into another prime (23513543503) 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, 11756771753 + 11756771754.

It is an arithmetic number, because the mean of its divisors is an integer number (11756771754).

Almost surely, 2^23513543507 is an apocalyptic number.

23513543507 is a deficient number, since it is larger than the sum of its proper divisors (1).

23513543507 is an equidigital number, since it uses as much as digits as its factorization.

23513543507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 23513543507 in words is "twenty-three billion, five hundred thirteen million, five hundred forty-three thousand, five hundred seven".