6812139138828 has 24 divisors (see below), whose sum is σ = 15915661035120. Its totient is φ = 2267760230400.

The previous prime is 6812139138817. The next prime is 6812139138911. The reversal of 6812139138828 is 8288319312186.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 369092373 + ... + 369110828.

It is an arithmetic number, because the mean of its divisors is an integer number (663152543130).

Almost surely, 2^{6812139138828} is an apocalyptic number.

It is an amenable number.

6812139138828 is an abundant number, since it is smaller than the sum of its proper divisors (9103521896292).

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

6812139138828 is a wasteful number, since it uses less digits than its factorization.

6812139138828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738203977 (or 738203975 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 60.

The spelling of 6812139138828 in words is "six trillion, eight hundred twelve billion, one hundred thirty-nine million, one hundred thirty-eight thousand, eight hundred twenty-eight".