23321325551 has 2 divisors, whose sum is σ = 23321325552. Its totient is φ = 23321325550.

The previous prime is 23321325529. The next prime is 23321325563. The reversal of 23321325551 is 15552312332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23321325551 - 2²² = 23317131247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23321327551) 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, 11660662775 + 11660662776.

It is an arithmetic number, because the mean of its divisors is an integer number (11660662776).

Almost surely, 2^23321325551 is an apocalyptic number.

23321325551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321325551 is an equidigital number, since it uses as much as digits as its factorization.

23321325551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

Adding to 23321325551 its reverse (15552312332), we get a palindrome (38873637883).

The spelling of 23321325551 in words is "twenty-three billion, three hundred twenty-one million, three hundred twenty-five thousand, five hundred fifty-one".