12746257147 has 4 divisors (see below), whose sum is σ = 13726738480. Its totient is φ = 11765775816.

The previous prime is 12746257109. The next prime is 12746257177. The reversal of 12746257147 is 74175264721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74175264721 = 29 ⋅2557767749.

It is a cyclic number.

It is not a de Polignac number, because 12746257147 - 2¹⁹ = 12745732859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12746257097 and 12746257106.

It is not an unprimeable number, because it can be changed into a prime (12746257177) 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, 490240647 + ... + 490240672.

It is an arithmetic number, because the mean of its divisors is an integer number (3431684620).

Almost surely, 2^12746257147 is an apocalyptic number.

12746257147 is a deficient number, since it is larger than the sum of its proper divisors (980481333).

12746257147 is an equidigital number, since it uses as much as digits as its factorization.

12746257147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980481332.

The product of its digits is 658560, while the sum is 46.

The spelling of 12746257147 in words is "twelve billion, seven hundred forty-six million, two hundred fifty-seven thousand, one hundred forty-seven".