12671671087 has 4 divisors (see below), whose sum is σ = 12691378840. Its totient is φ = 12651963336.

The previous prime is 12671671069. The next prime is 12671671127. The reversal of 12671671087 is 78017617621.

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 12671671087 - 2²⁷ = 12537453359 is a prime.

It is a super-2 number, since 2×12671671087² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671671057) 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, 9852912 + ... + 9854197.

It is an arithmetic number, because the mean of its divisors is an integer number (3172844710).

Almost surely, 2^12671671087 is an apocalyptic number.

12671671087 is a deficient number, since it is larger than the sum of its proper divisors (19707753).

12671671087 is an equidigital number, since it uses as much as digits as its factorization.

12671671087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707752.

The product of its (nonzero) digits is 197568, while the sum is 46.

The spelling of 12671671087 in words is "twelve billion, six hundred seventy-one million, six hundred seventy-one thousand, eighty-seven".