6786117139247 has 8 divisors (see below), whose sum is σ = 6969904306896. Its totient is φ = 6602349897792.

The previous prime is 6786117139229. The next prime is 6786117139273. The reversal of 6786117139247 is 7429317116876.

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 6786117139247 - 2⁸ = 6786117138991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6786117139247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6786117139147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4289918 + ... + 5654699.

It is an arithmetic number, because the mean of its divisors is an integer number (871238038362).

Almost surely, 2^{6786117139247} is an apocalyptic number.

6786117139247 is a deficient number, since it is larger than the sum of its proper divisors (183787167649).

6786117139247 is a wasteful number, since it uses less digits than its factorization.

6786117139247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963097.

The product of its digits is 21337344, while the sum is 62.

The spelling of 6786117139247 in words is "six trillion, seven hundred eighty-six billion, one hundred seventeen million, one hundred thirty-nine thousand, two hundred forty-seven".