12694941679887 has 8 divisors (see below), whose sum is σ = 18807321007280. Its totient is φ = 8463294453240.

The previous prime is 12694941679873. The next prime is 12694941679961. The reversal of 12694941679887 is 78897614949621.

12694941679887 is a `hidden beast` number, since 1 + 2 + 69 + 494 + 1 + 67 + 9 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 12694941679887 - 2¹² = 12694941675791 is a prime.

It is a super-2 number, since 2×12694941679887² (a number of 27 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 (12694941671887) 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 7 ways as a sum of consecutive naturals, for example, 235091512564 + ... + 235091512617.

It is an arithmetic number, because the mean of its divisors is an integer number (2350915125910).

Almost surely, 2^{12694941679887} is an apocalyptic number.

12694941679887 is a deficient number, since it is larger than the sum of its proper divisors (6112379327393).

12694941679887 is an equidigital number, since it uses as much as digits as its factorization.

12694941679887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470183025190 (or 470183025184 counting only the distinct ones).

The product of its digits is 2633637888, while the sum is 81.

The spelling of 12694941679887 in words is "twelve trillion, six hundred ninety-four billion, nine hundred forty-one million, six hundred seventy-nine thousand, eight hundred eighty-seven".