12643161462244 has 24 divisors (see below), whose sum is σ = 23811084227448. Its totient is φ = 5852186595840.

The previous prime is 12643161462163. The next prime is 12643161462251. The reversal of 12643161462244 is 44226416134621.

It can be written as a sum of positive squares in 4 ways, for example, as 4164407513344 + 8478753948900 = 2040688^2 + 2911830^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12643161462194 and 12643161462203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524002779 + ... + 1524011074.

It is an arithmetic number, because the mean of its divisors is an integer number (992128509477).

Almost surely, 2^{12643161462244} is an apocalyptic number.

It is an amenable number.

12643161462244 is a deficient number, since it is larger than the sum of its proper divisors (11167922765204).

12643161462244 is a wasteful number, since it uses less digits than its factorization.

12643161462244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048013935 (or 3048013933 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 46.

Adding to 12643161462244 its reverse (44226416134621), we get a palindrome (56869577596865).

The spelling of 12643161462244 in words is "twelve trillion, six hundred forty-three billion, one hundred sixty-one million, four hundred sixty-two thousand, two hundred forty-four".