23152234320521 has 2 divisors, whose sum is σ = 23152234320522. Its totient is φ = 23152234320520.

The previous prime is 23152234320499. The next prime is 23152234320539. The reversal of 23152234320521 is 12502343225132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22225897369225 + 926336951296 = 4714435^2 + 962464^2 .

It is a cyclic number.

It is not a de Polignac number, because 23152234320521 - 2³⁸ = 22877356413577 is a prime.

It is a super-2 number, since 2×23152234320521² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23152234320541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11576117160260 + 11576117160261.

It is an arithmetic number, because the mean of its divisors is an integer number (11576117160261).

Almost surely, 2^{23152234320521} is an apocalyptic number.

It is an amenable number.

23152234320521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23152234320521 is an equidigital number, since it uses as much as digits as its factorization.

23152234320521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 23152234320521 its reverse (12502343225132), we get a palindrome (35654577545653).

The spelling of 23152234320521 in words is "twenty-three trillion, one hundred fifty-two billion, two hundred thirty-four million, three hundred twenty thousand, five hundred twenty-one".