12671371685 has 32 divisors (see below), whose sum is σ = 18897442560. Its totient is φ = 7956790272.

The previous prime is 12671371673. The next prime is 12671371693. The reversal of 12671371685 is 58617317621.

It is a cyclic number.

It is not a de Polignac number, because 12671371685 - 2¹² = 12671367589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265775 + ... + 309804.

It is an arithmetic number, because the mean of its divisors is an integer number (590545080).

Almost surely, 2^12671371685 is an apocalyptic number.

It is an amenable number.

12671371685 is a deficient number, since it is larger than the sum of its proper divisors (6226070875).

12671371685 is a wasteful number, since it uses less digits than its factorization.

12671371685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575645.

The product of its digits is 423360, while the sum is 47.

The spelling of 12671371685 in words is "twelve billion, six hundred seventy-one million, three hundred seventy-one thousand, six hundred eighty-five".