12746572771 has 4 divisors (see below), whose sum is σ = 12746840392. Its totient is φ = 12746305152.

The previous prime is 12746572759. The next prime is 12746572841. The reversal of 12746572771 is 17727564721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17727564721 = 43 ⋅412268947.

It is a cyclic number.

It is not a de Polignac number, because 12746572771 - 2¹¹ = 12746570723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12746576771) 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 3 ways as a sum of consecutive naturals, for example, 40830 + ... + 164803.

It is an arithmetic number, because the mean of its divisors is an integer number (3186710098).

Almost surely, 2^12746572771 is an apocalyptic number.

12746572771 is a deficient number, since it is larger than the sum of its proper divisors (267621).

12746572771 is an equidigital number, since it uses as much as digits as its factorization.

12746572771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267620.

The product of its digits is 1152480, while the sum is 49.

The spelling of 12746572771 in words is "twelve billion, seven hundred forty-six million, five hundred seventy-two thousand, seven hundred seventy-one".