6820944834015 has 32 divisors (see below), whose sum is σ = 13058902933440. Its totient is φ = 3358003609728.

The previous prime is 6820944834007. The next prime is 6820944834061. The reversal of 6820944834015 is 5104384490286.

6820944834015 is a `hidden beast` number, since 6 + 8 + 20 + 94 + 483 + 40 + 15 = 666.

It is not a de Polignac number, because 6820944834015 - 2³ = 6820944834007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1943287372 + ... + 1943290881.

It is an arithmetic number, because the mean of its divisors is an integer number (408090716670).

Almost surely, 2^{6820944834015} is an apocalyptic number.

6820944834015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6820944834015 is a deficient number, since it is larger than the sum of its proper divisors (6237958099425).

6820944834015 is a wasteful number, since it uses less digits than its factorization.

6820944834015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886578280 (or 3886578274 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 6820944834015 in words is "six trillion, eight hundred twenty billion, nine hundred forty-four million, eight hundred thirty-four thousand, fifteen".