6767998814639 has 2 divisors, whose sum is σ = 6767998814640. Its totient is φ = 6767998814638.

The previous prime is 6767998814581. The next prime is 6767998814719. The reversal of 6767998814639 is 9364188997676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6767998814639 - 2²⁰ = 6767997766063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6767998814539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383999407319 + 3383999407320.

It is an arithmetic number, because the mean of its divisors is an integer number (3383999407320).

Almost surely, 2^{6767998814639} is an apocalyptic number.

6767998814639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6767998814639 is an equidigital number, since it uses as much as digits as its factorization.

6767998814639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5925685248, while the sum is 83.

The spelling of 6767998814639 in words is "six trillion, seven hundred sixty-seven billion, nine hundred ninety-eight million, eight hundred fourteen thousand, six hundred thirty-nine".