6813777368 has 32 divisors (see below), whose sum is σ = 13170416400. Its totient is φ = 3303249408.

The previous prime is 6813777367. The next prime is 6813777391. The reversal of 6813777368 is 8637773186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813777367) 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, 64421 + ... + 133332.

Almost surely, 2^6813777368 is an apocalyptic number.

It is an amenable number.

6813777368 is a deficient number, since it is larger than the sum of its proper divisors (6356639032).

6813777368 is a wasteful number, since it uses less digits than its factorization.

6813777368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197891 (or 197887 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 56.

The square root of 6813777368 is about 82545.6078056246. The cubic root of 6813777368 is about 1895.8151076032.

The spelling of 6813777368 in words is "six billion, eight hundred thirteen million, seven hundred seventy-seven thousand, three hundred sixty-eight".