12871643337 has 40 divisors (see below), whose sum is σ = 22135403136. Its totient is φ = 7301492928.

The previous prime is 12871643329. The next prime is 12871643357. The reversal of 12871643337 is 73334617821.

It is not a de Polignac number, because 12871643337 - 2³ = 12871643329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12871643292 and 12871643301.

It is not an unprimeable number, because it can be changed into a prime (12871643357) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5173 + ... + 160530.

Almost surely, 2^12871643337 is an apocalyptic number.

It is an amenable number.

12871643337 is a deficient number, since it is larger than the sum of its proper divisors (9263759799).

12871643337 is a wasteful number, since it uses less digits than its factorization.

12871643337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165859 (or 165850 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 12871643337 in words is "twelve billion, eight hundred seventy-one million, six hundred forty-three thousand, three hundred thirty-seven".