23133305154521 has 2 divisors, whose sum is σ = 23133305154522. Its totient is φ = 23133305154520.

The previous prime is 23133305154511. The next prime is 23133305154539. The reversal of 23133305154521 is 12545150333132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22503059700121 + 630245454400 = 4743739^2 + 793880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23133305154521 is a prime.

It is not a weakly prime, because it can be changed into another prime (23133305154511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566652577260 + 11566652577261.

It is an arithmetic number, because the mean of its divisors is an integer number (11566652577261).

Almost surely, 2^{23133305154521} is an apocalyptic number.

It is an amenable number.

23133305154521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23133305154521 is an equidigital number, since it uses as much as digits as its factorization.

23133305154521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 38.

Adding to 23133305154521 its reverse (12545150333132), we get a palindrome (35678455487653).

The spelling of 23133305154521 in words is "twenty-three trillion, one hundred thirty-three billion, three hundred five million, one hundred fifty-four thousand, five hundred twenty-one".