12643044061 has 8 divisors (see below), whose sum is σ = 13057912064. Its totient is φ = 12228615360.

The previous prime is 12643044023. The next prime is 12643044077. The reversal of 12643044061 is 16044034621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12643044061 - 2¹³ = 12643035869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643044091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50811 + ... + 166936.

It is an arithmetic number, because the mean of its divisors is an integer number (1632239008).

Almost surely, 2^12643044061 is an apocalyptic number.

It is an amenable number.

12643044061 is a deficient number, since it is larger than the sum of its proper divisors (414868003).

12643044061 is a wasteful number, since it uses less digits than its factorization.

12643044061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219651.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12643044061 its reverse (16044034621), we get a palindrome (28687078682).

The spelling of 12643044061 in words is "twelve billion, six hundred forty-three million, forty-four thousand, sixty-one".