12739441571 has 4 divisors (see below), whose sum is σ = 12784777944. Its totient is φ = 12694105200.

The previous prime is 12739441543. The next prime is 12739441579. The reversal of 12739441571 is 17514493721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12739441571 - 2¹⁰ = 12739440547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12739441579) 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, 22667765 + ... + 22668326.

It is an arithmetic number, because the mean of its divisors is an integer number (3196194486).

Almost surely, 2^12739441571 is an apocalyptic number.

12739441571 is a deficient number, since it is larger than the sum of its proper divisors (45336373).

12739441571 is an equidigital number, since it uses as much as digits as its factorization.

12739441571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45336372.

The product of its digits is 211680, while the sum is 44.

The spelling of 12739441571 in words is "twelve billion, seven hundred thirty-nine million, four hundred forty-one thousand, five hundred seventy-one".