23717350805573 has 2 divisors, whose sum is σ = 23717350805574. Its totient is φ = 23717350805572.

The previous prime is 23717350805569. The next prime is 23717350805597. The reversal of 23717350805573 is 37550805371732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23668448790529 + 48902015044 = 4865023^2 + 221138^2 .

It is a cyclic number.

It is not a de Polignac number, because 23717350805573 - 2² = 23717350805569 is a prime.

It is a super-2 number, since 2×23717350805573² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23717350805563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11858675402786 + 11858675402787.

It is an arithmetic number, because the mean of its divisors is an integer number (11858675402787).

Almost surely, 2^{23717350805573} is an apocalyptic number.

It is an amenable number.

23717350805573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23717350805573 is an equidigital number, since it uses as much as digits as its factorization.

23717350805573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522000, while the sum is 56.

The spelling of 23717350805573 in words is "twenty-three trillion, seven hundred seventeen billion, three hundred fifty million, eight hundred five thousand, five hundred seventy-three".