12687444768471 has 16 divisors (see below), whose sum is σ = 18497282923008. Its totient is φ = 7671519713600.

The previous prime is 12687444768371. The next prime is 12687444768503. The reversal of 12687444768471 is 17486744478621.

It is a cyclic number.

It is not a de Polignac number, because 12687444768471 - 2³⁴ = 12670264899287 is a prime.

It is a super-3 number, since 3×12687444768471³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12687444768396 and 12687444768405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687444768371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446004366 + ... + 446032811.

It is an arithmetic number, because the mean of its divisors is an integer number (1156080182688).

Almost surely, 2^{12687444768471} is an apocalyptic number.

12687444768471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12687444768471 is a deficient number, since it is larger than the sum of its proper divisors (5809838154537).

12687444768471 is a wasteful number, since it uses less digits than its factorization.

12687444768471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892037622.

The product of its digits is 404619264, while the sum is 69.

The spelling of 12687444768471 in words is "twelve trillion, six hundred eighty-seven billion, four hundred forty-four million, seven hundred sixty-eight thousand, four hundred seventy-one".