6776138808 has 64 divisors (see below), whose sum is σ = 18837856800. Its totient is φ = 2256883200.

The previous prime is 6776138801. The next prime is 6776138827. The reversal of 6776138808 is 8088316776.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6776138801) 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 15 ways as a sum of consecutive naturals, for example, 268960 + ... + 293072.

Almost surely, 2^6776138808 is an apocalyptic number.

It is an amenable number.

6776138808 is an abundant number, since it is smaller than the sum of its proper divisors (12061717992).

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

6776138808 is a wasteful number, since it uses less digits than its factorization.

6776138808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25429 (or 25419 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 6776138808 is about 82317.3056410376. The cubic root of 6776138808 is about 1892.3179019355.

The spelling of 6776138808 in words is "six billion, seven hundred seventy-six million, one hundred thirty-eight thousand, eight hundred eight".