6778489133 has 16 divisors (see below), whose sum is σ = 7501353216. Its totient is φ = 6084590400.

The previous prime is 6778489129. The next prime is 6778489147. The reversal of 6778489133 is 3319848776.

6778489133 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6778489133 - 2² = 6778489129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778449133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368860 + ... + 1373802.

It is an arithmetic number, because the mean of its divisors is an integer number (468834576).

Almost surely, 2^6778489133 is an apocalyptic number.

It is an amenable number.

6778489133 is a deficient number, since it is larger than the sum of its proper divisors (722864083).

6778489133 is a wasteful number, since it uses less digits than its factorization.

6778489133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844.

The product of its digits is 6096384, while the sum is 56.

The square root of 6778489133 is about 82331.5804111642. The cubic root of 6778489133 is about 1892.5366621115.

The spelling of 6778489133 in words is "six billion, seven hundred seventy-eight million, four hundred eighty-nine thousand, one hundred thirty-three".