12643000611617 has 4 divisors (see below), whose sum is σ = 13050839341056. Its totient is φ = 12235161882180.

The previous prime is 12643000611551. The next prime is 12643000611629. The reversal of 12643000611617 is 71611600034621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12643000611617 - 2¹⁴ = 12643000595233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12643000611317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203919364673 + ... + 203919364734.

It is an arithmetic number, because the mean of its divisors is an integer number (3262709835264).

Almost surely, 2^{12643000611617} is an apocalyptic number.

It is an amenable number.

12643000611617 is a deficient number, since it is larger than the sum of its proper divisors (407838729439).

12643000611617 is an equidigital number, since it uses as much as digits as its factorization.

12643000611617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407838729438.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 12643000611617 in words is "twelve trillion, six hundred forty-three billion, six hundred eleven thousand, six hundred seventeen".