23651719321 has 2 divisors, whose sum is σ = 23651719322. Its totient is φ = 23651719320.

The previous prime is 23651719291. The next prime is 23651719361. The reversal of 23651719321 is 12391715632.

It is an a-pointer prime, because the next prime (23651719361) can be obtained adding 23651719321 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21197904025 + 2453815296 = 145595^2 + 49536^2 .

It is a cyclic number.

It is not a de Polignac number, because 23651719321 - 2⁷ = 23651719193 is a prime.

It is not a weakly prime, because it can be changed into another prime (23651719361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11825859660 + 11825859661.

It is an arithmetic number, because the mean of its divisors is an integer number (11825859661).

Almost surely, 2^23651719321 is an apocalyptic number.

It is an amenable number.

23651719321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23651719321 is an equidigital number, since it uses as much as digits as its factorization.

23651719321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The spelling of 23651719321 in words is "twenty-three billion, six hundred fifty-one million, seven hundred nineteen thousand, three hundred twenty-one".