12643601255447 has 8 divisors (see below), whose sum is σ = 12652357798080. Its totient is φ = 12634845101280.

The previous prime is 12643601255431. The next prime is 12643601255459. The reversal of 12643601255447 is 74455210634621.

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 12643601255447 - 2⁴ = 12643601255431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12643601255395 and 12643601255404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643601255497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101101697 + ... + 101226677.

It is an arithmetic number, because the mean of its divisors is an integer number (1581544724760).

Almost surely, 2^{12643601255447} is an apocalyptic number.

12643601255447 is a deficient number, since it is larger than the sum of its proper divisors (8756542633).

12643601255447 is a wasteful number, since it uses less digits than its factorization.

12643601255447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194233.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 12643601255447 in words is "twelve trillion, six hundred forty-three billion, six hundred one million, two hundred fifty-five thousand, four hundred forty-seven".