12545771271 has 16 divisors (see below), whose sum is σ = 18415816320. Its totient is φ = 7533738720.

The previous prime is 12545771149. The next prime is 12545771317. The reversal of 12545771271 is 17217754521.

It is not a de Polignac number, because 12545771271 - 2⁹ = 12545770759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545771471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1740325 + ... + 1747518.

It is an arithmetic number, because the mean of its divisors is an integer number (1150988520).

Almost surely, 2^12545771271 is an apocalyptic number.

12545771271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12545771271 is a deficient number, since it is larger than the sum of its proper divisors (5870045049).

12545771271 is a wasteful number, since it uses less digits than its factorization.

12545771271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487966.

The product of its digits is 137200, while the sum is 42.

The spelling of 12545771271 in words is "twelve billion, five hundred forty-five million, seven hundred seventy-one thousand, two hundred seventy-one".