6776821842 has 32 divisors (see below), whose sum is σ = 15536707584. Its totient is φ = 1930381200.

The previous prime is 6776821813. The next prime is 6776821873. The reversal of 6776821842 is 2481286776.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229834 + ... + 257637.

It is an arithmetic number, because the mean of its divisors is an integer number (485522112).

Almost surely, 2^6776821842 is an apocalyptic number.

6776821842 is an abundant number, since it is smaller than the sum of its proper divisors (8759885742).

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

6776821842 is a wasteful number, since it uses less digits than its factorization.

6776821842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487814.

The product of its digits is 1806336, while the sum is 51.

The square root of 6776821842 is about 82321.4543238881. The cubic root of 6776821842 is about 1892.3814816071.

The spelling of 6776821842 in words is "six billion, seven hundred seventy-six million, eight hundred twenty-one thousand, eight hundred forty-two".