70065680917 has 2 divisors, whose sum is σ = 70065680918. Its totient is φ = 70065680916.

The previous prime is 70065680857. The next prime is 70065680921. The reversal of 70065680917 is 71908656007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69119564836 + 946116081 = 262906^2 + 30759^2 .

It is an emirp because it is prime and its reverse (71908656007) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70065680917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70065680957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35032840458 + 35032840459.

It is an arithmetic number, because the mean of its divisors is an integer number (35032840459).

Almost surely, 2^70065680917 is an apocalyptic number.

It is an amenable number.

70065680917 is a deficient number, since it is larger than the sum of its proper divisors (1).

70065680917 is an equidigital number, since it uses as much as digits as its factorization.

70065680917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 70065680917 in words is "seventy billion, sixty-five million, six hundred eighty thousand, nine hundred seventeen".