6777133840 has 20 divisors (see below), whose sum is σ = 15756836364. Its totient is φ = 2710853504.

The previous prime is 6777133837. The next prime is 6777133843. The reversal of 6777133840 is 483317776.

It is an interprime number because it is at equal distance from previous prime (6777133837) and next prime (6777133843).

It can be written as a sum of positive squares in 2 ways, for example, as 3266808336 + 3510325504 = 57156^2 + 59248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (6777133843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42357007 + ... + 42357166.

Almost surely, 2^6777133840 is an apocalyptic number.

It is an amenable number.

6777133840 is an abundant number, since it is smaller than the sum of its proper divisors (8979702524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6777133840 is a wasteful number, since it uses less digits than its factorization.

6777133840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84714186 (or 84714180 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 6777133840 is about 82323.3493001834. The cubic root of 6777133840 is about 1892.4105222690.

The spelling of 6777133840 in words is "six billion, seven hundred seventy-seven million, one hundred thirty-three thousand, eight hundred forty".