12171471563 has 2 divisors, whose sum is σ = 12171471564. Its totient is φ = 12171471562.

The previous prime is 12171471547. The next prime is 12171471577. The reversal of 12171471563 is 36517417121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12171471563 - 2⁴ = 12171471547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12171471583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6085735781 + 6085735782.

It is an arithmetic number, because the mean of its divisors is an integer number (6085735782).

Almost surely, 2^12171471563 is an apocalyptic number.

12171471563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12171471563 is an equidigital number, since it uses as much as digits as its factorization.

12171471563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

Adding to 12171471563 its reverse (36517417121), we get a palindrome (48688888684).

The spelling of 12171471563 in words is "twelve billion, one hundred seventy-one million, four hundred seventy-one thousand, five hundred sixty-three".