23355451513447 has 2 divisors, whose sum is σ = 23355451513448. Its totient is φ = 23355451513446.

The previous prime is 23355451513417. The next prime is 23355451513549. The reversal of 23355451513447 is 74431515455332.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23355451513447 - 2³¹ = 23353304029799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23355451513394 and 23355451513403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23355451513417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11677725756723 + 11677725756724.

It is an arithmetic number, because the mean of its divisors is an integer number (11677725756724).

Almost surely, 2^{23355451513447} is an apocalyptic number.

23355451513447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23355451513447 is an equidigital number, since it uses as much as digits as its factorization.

23355451513447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120000, while the sum is 52.

Adding to 23355451513447 its reverse (74431515455332), we get a palindrome (97786966968779).

The spelling of 23355451513447 in words is "twenty-three trillion, three hundred fifty-five billion, four hundred fifty-one million, five hundred thirteen thousand, four hundred forty-seven".