6862635064721 has 2 divisors, whose sum is σ = 6862635064722. Its totient is φ = 6862635064720.

The previous prime is 6862635064717. The next prime is 6862635064861. The reversal of 6862635064721 is 1274605362686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6169560499600 + 693074565121 = 2483860^2 + 832511^2 .

It is a cyclic number.

It is not a de Polignac number, because 6862635064721 - 2² = 6862635064717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6862635064711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3431317532360 + 3431317532361.

It is an arithmetic number, because the mean of its divisors is an integer number (3431317532361).

Almost surely, 2^{6862635064721} is an apocalyptic number.

It is an amenable number.

6862635064721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6862635064721 is an equidigital number, since it uses as much as digits as its factorization.

6862635064721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 6862635064721 in words is "six trillion, eight hundred sixty-two billion, six hundred thirty-five million, sixty-four thousand, seven hundred twenty-one".