6815881227984 has 20 divisors (see below), whose sum is σ = 17607693172416. Its totient is φ = 2271960409312.

The previous prime is 6815881227979. The next prime is 6815881228049. The reversal of 6815881227984 is 4897221885186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70998762744 + ... + 70998762839.

Almost surely, 2^{6815881227984} is an apocalyptic number.

It is an amenable number.

6815881227984 is an abundant number, since it is smaller than the sum of its proper divisors (10791811944432).

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

6815881227984 is a wasteful number, since it uses less digits than its factorization.

6815881227984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141997525594 (or 141997525588 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 69.

The spelling of 6815881227984 in words is "six trillion, eight hundred fifteen billion, eight hundred eighty-one million, two hundred twenty-seven thousand, nine hundred eighty-four".