12688746977 has 8 divisors (see below), whose sum is σ = 13747589856. Its totient is φ = 11664620352.

The previous prime is 12688746937. The next prime is 12688746997. The reversal of 12688746977 is 77964788621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12688746977 - 2¹⁸ = 12688484833 is a prime.

It is a super-2 number, since 2×12688746977² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12688746937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8678303 + ... + 8679764.

It is an arithmetic number, because the mean of its divisors is an integer number (1718448732).

Almost surely, 2^12688746977 is an apocalyptic number.

12688746977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12688746977 is a deficient number, since it is larger than the sum of its proper divisors (1058842879).

12688746977 is a wasteful number, since it uses less digits than its factorization.

12688746977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17358127.

The product of its digits is 56899584, while the sum is 65.

The spelling of 12688746977 in words is "twelve billion, six hundred eighty-eight million, seven hundred forty-six thousand, nine hundred seventy-seven".