7067856550721 has 2 divisors, whose sum is σ = 7067856550722. Its totient is φ = 7067856550720.

The previous prime is 7067856550681. The next prime is 7067856550753. The reversal of 7067856550721 is 1270556587607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3858223063696 + 3209633487025 = 1964236^2 + 1791545^2 .

It is an emirp because it is prime and its reverse (1270556587607) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7067856550721 is a prime.

It is not a weakly prime, because it can be changed into another prime (7067856550921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3533928275360 + 3533928275361.

It is an arithmetic number, because the mean of its divisors is an integer number (3533928275361).

Almost surely, 2^{7067856550721} is an apocalyptic number.

It is an amenable number.

7067856550721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7067856550721 is an equidigital number, since it uses as much as digits as its factorization.

7067856550721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696000, while the sum is 59.

The spelling of 7067856550721 in words is "seven trillion, sixty-seven billion, eight hundred fifty-six million, five hundred fifty thousand, seven hundred twenty-one".