6781717912 has 8 divisors (see below), whose sum is σ = 12715721100. Its totient is φ = 3390858952.

The previous prime is 6781717907. The next prime is 6781717919. The reversal of 6781717912 is 2197171876.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781717919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423857362 + ... + 423857377.

Almost surely, 2^6781717912 is an apocalyptic number.

It is an amenable number.

6781717912 is a deficient number, since it is larger than the sum of its proper divisors (5934003188).

6781717912 is a wasteful number, since it uses less digits than its factorization.

6781717912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847714745 (or 847714741 counting only the distinct ones).

The product of its digits is 296352, while the sum is 49.

The square root of 6781717912 is about 82351.1864638270. The cubic root of 6781717912 is about 1892.8371033335.

The spelling of 6781717912 in words is "six billion, seven hundred eighty-one million, seven hundred seventeen thousand, nine hundred twelve".