23396745991 has 2 divisors, whose sum is σ = 23396745992. Its totient is φ = 23396745990.

The previous prime is 23396745989. The next prime is 23396746001. The reversal of 23396745991 is 19954769332.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23396745991 - 2¹ = 23396745989 is a prime.

It is a super-3 number, since 3×23396745991³ (a number of 32 digits) contains 333 as substring.

Together with 23396745989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23396745391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11698372995 + 11698372996.

It is an arithmetic number, because the mean of its divisors is an integer number (11698372996).

Almost surely, 2^23396745991 is an apocalyptic number.

23396745991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23396745991 is an equidigital number, since it uses as much as digits as its factorization.

23396745991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 58.

The spelling of 23396745991 in words is "twenty-three billion, three hundred ninety-six million, seven hundred forty-five thousand, nine hundred ninety-one".