23921068608389 has 2 divisors, whose sum is σ = 23921068608390. Its totient is φ = 23921068608388.

The previous prime is 23921068608361. The next prime is 23921068608391. The reversal of 23921068608389 is 98380686012932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21104679804289 + 2816388804100 = 4593983^2 + 1678210^2 .

It is a cyclic number.

It is not a de Polignac number, because 23921068608389 - 2³² = 23916773641093 is a prime.

It is a Sophie Germain prime.

Together with 23921068608391, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23921068608089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11960534304194 + 11960534304195.

It is an arithmetic number, because the mean of its divisors is an integer number (11960534304195).

Almost surely, 2^{23921068608389} is an apocalyptic number.

It is an amenable number.

23921068608389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23921068608389 is an equidigital number, since it uses as much as digits as its factorization.

23921068608389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53747712, while the sum is 65.

The spelling of 23921068608389 in words is "twenty-three trillion, nine hundred twenty-one billion, sixty-eight million, six hundred eight thousand, three hundred eighty-nine".