12549432163 has 2 divisors, whose sum is σ = 12549432164. Its totient is φ = 12549432162.

The previous prime is 12549432107. The next prime is 12549432187. The reversal of 12549432163 is 36123494521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12549432163 - 2⁹ = 12549431651 is a prime.

It is a super-2 number, since 2×12549432163² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (12549432563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6274716081 + 6274716082.

It is an arithmetic number, because the mean of its divisors is an integer number (6274716082).

Almost surely, 2^12549432163 is an apocalyptic number.

12549432163 is a deficient number, since it is larger than the sum of its proper divisors (1).

12549432163 is an equidigital number, since it uses as much as digits as its factorization.

12549432163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The spelling of 12549432163 in words is "twelve billion, five hundred forty-nine million, four hundred thirty-two thousand, one hundred sixty-three".