23261221360451 has 2 divisors, whose sum is σ = 23261221360452. Its totient is φ = 23261221360450.

The previous prime is 23261221360291. The next prime is 23261221360457. The reversal of 23261221360451 is 15406312216232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23261221360451 is a prime.

It is not a weakly prime, because it can be changed into another prime (23261221360457) 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, 11630610680225 + 11630610680226.

It is an arithmetic number, because the mean of its divisors is an integer number (11630610680226).

Almost surely, 2^{23261221360451} is an apocalyptic number.

23261221360451 is a deficient number, since it is larger than the sum of its proper divisors (1).

23261221360451 is an equidigital number, since it uses as much as digits as its factorization.

23261221360451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 23261221360451 its reverse (15406312216232), we get a palindrome (38667533576683).

The spelling of 23261221360451 in words is "twenty-three trillion, two hundred sixty-one billion, two hundred twenty-one million, three hundred sixty thousand, four hundred fifty-one".