6767998814691 has 12 divisors (see below), whose sum is σ = 9776194938432. Its totient is φ = 4511908448016.

The previous prime is 6767998814639. The next prime is 6767998814719. The reversal of 6767998814691 is 1964188997676.

6767998814691 is a `hidden beast` number, since 6 + 7 + 6 + 79 + 9 + 8 + 81 + 469 + 1 = 666.

It is not a de Polignac number, because 6767998814691 - 2²⁹ = 6767461943779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6767998814691.

It is not an unprimeable number, because it can be changed into a prime (6767998814191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7089651 + ... + 7987436.

It is an arithmetic number, because the mean of its divisors is an integer number (814682911536).

Almost surely, 2^{6767998814691} is an apocalyptic number.

6767998814691 is a deficient number, since it is larger than the sum of its proper divisors (3008196123741).

6767998814691 is a wasteful number, since it uses less digits than its factorization.

6767998814691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15126970 (or 15126967 counting only the distinct ones).

The product of its digits is 1975228416, while the sum is 81.

The spelling of 6767998814691 in words is "six trillion, seven hundred sixty-seven billion, nine hundred ninety-eight million, eight hundred fourteen thousand, six hundred ninety-one".