23691048517 has 2 divisors, whose sum is σ = 23691048518. Its totient is φ = 23691048516.

The previous prime is 23691048497. The next prime is 23691048523. The reversal of 23691048517 is 71584019632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22895018721 + 796029796 = 151311^2 + 28214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23691048517 is a prime.

It is a super-2 number, since 2×23691048517² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23691048817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11845524258 + 11845524259.

It is an arithmetic number, because the mean of its divisors is an integer number (11845524259).

It is a 1-persistent number, because it is pandigital, but 2⋅23691048517 = 47382097034 is not.

Almost surely, 2^23691048517 is an apocalyptic number.

It is an amenable number.

23691048517 is a deficient number, since it is larger than the sum of its proper divisors (1).

23691048517 is an equidigital number, since it uses as much as digits as its factorization.

23691048517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 23691048517 in words is "twenty-three billion, six hundred ninety-one million, forty-eight thousand, five hundred seventeen".