6551776776 has 64 divisors (see below), whose sum is σ = 17107387200. Its totient is φ = 2088868608.

The previous prime is 6551776769. The next prime is 6551776789. The reversal of 6551776776 is 6776771556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10135 + ... + 114918.

It is an arithmetic number, because the mean of its divisors is an integer number (267302925).

Almost surely, 2^6551776776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551776776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8553693600).

6551776776 is an abundant number, since it is smaller than the sum of its proper divisors (10555610424).

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

6551776776 is a wasteful number, since it uses less digits than its factorization.

6551776776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125158 (or 125154 counting only the distinct ones).

The product of its digits is 12965400, while the sum is 57.

The square root of 6551776776 is about 80943.0464956688. The cubic root of 6551776776 is about 1871.1977966694.

The spelling of 6551776776 in words is "six billion, five hundred fifty-one million, seven hundred seventy-six thousand, seven hundred seventy-six".