6798920094721 has 2 divisors, whose sum is σ = 6798920094722. Its totient is φ = 6798920094720.

The previous prime is 6798920094719. The next prime is 6798920094749. The reversal of 6798920094721 is 1274900298976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5858873501121 + 940046593600 = 2420511^2 + 969560^2 .

It is a cyclic number.

It is not a de Polignac number, because 6798920094721 - 2¹ = 6798920094719 is a prime.

It is a super-2 number, since 2×6798920094721² (a number of 26 digits) contains 22 as substring.

Together with 6798920094719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6798920091721) by changing a digit.

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 as a sum of consecutive naturals, namely, 3399460047360 + 3399460047361.

It is an arithmetic number, because the mean of its divisors is an integer number (3399460047361).

Almost surely, 2^{6798920094721} is an apocalyptic number.

It is an amenable number.

6798920094721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6798920094721 is an equidigital number, since it uses as much as digits as its factorization.

6798920094721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 6798920094721 in words is "six trillion, seven hundred ninety-eight billion, nine hundred twenty million, ninety-four thousand, seven hundred twenty-one".