23608729517 has 2 divisors, whose sum is σ = 23608729518. Its totient is φ = 23608729516.

The previous prime is 23608729423. The next prime is 23608729519. The reversal of 23608729517 is 71592780632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19267105636 + 4341623881 = 138806^2 + 65891^2 .

It is a cyclic number.

It is not a de Polignac number, because 23608729517 - 2¹² = 23608725421 is a prime.

Together with 23608729519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23608729519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11804364758 + 11804364759.

It is an arithmetic number, because the mean of its divisors is an integer number (11804364759).

Almost surely, 2^23608729517 is an apocalyptic number.

It is an amenable number.

23608729517 is a deficient number, since it is larger than the sum of its proper divisors (1).

23608729517 is an equidigital number, since it uses as much as digits as its factorization.

23608729517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 23608729517 in words is "twenty-three billion, six hundred eight million, seven hundred twenty-nine thousand, five hundred seventeen".