12755473647617 has 4 divisors (see below), whose sum is σ = 12768344964096. Its totient is φ = 12742602331140.

The previous prime is 12755473647583. The next prime is 12755473647649. The reversal of 12755473647617 is 71674637455721.

It is a happy number.

12755473647617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12755473647617 - 2³² = 12751178680321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12755473647017) 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, 6435656753 + ... + 6435658734.

It is an arithmetic number, because the mean of its divisors is an integer number (3192086241024).

Almost surely, 2^{12755473647617} is an apocalyptic number.

It is an amenable number.

12755473647617 is a deficient number, since it is larger than the sum of its proper divisors (12871316479).

12755473647617 is an equidigital number, since it uses as much as digits as its factorization.

12755473647617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871316478.

The product of its digits is 207446400, while the sum is 65.

The spelling of 12755473647617 in words is "twelve trillion, seven hundred fifty-five billion, four hundred seventy-three million, six hundred forty-seven thousand, six hundred seventeen".