12448558861 has 2 divisors, whose sum is σ = 12448558862. Its totient is φ = 12448558860.

The previous prime is 12448558853. The next prime is 12448558883. The reversal of 12448558861 is 16885584421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11684312836 + 764246025 = 108094^2 + 27645^2 .

It is a cyclic number.

It is not a de Polignac number, because 12448558861 - 2³ = 12448558853 is a prime.

It is a super-3 number, since 3×12448558861³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12448558799 and 12448558808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12448558831) 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, 6224279430 + 6224279431.

It is an arithmetic number, because the mean of its divisors is an integer number (6224279431).

Almost surely, 2^12448558861 is an apocalyptic number.

It is an amenable number.

12448558861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12448558861 is an equidigital number, since it uses as much as digits as its factorization.

12448558861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2457600, while the sum is 52.

The spelling of 12448558861 in words is "twelve billion, four hundred forty-eight million, five hundred fifty-eight thousand, eight hundred sixty-one".