3518511680609 has 2 divisors, whose sum is σ = 3518511680610. Its totient is φ = 3518511680608.

The previous prime is 3518511680603. The next prime is 3518511680647. The reversal of 3518511680609 is 9060861158153.

3518511680609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3052428294400 + 466083386209 = 1747120^2 + 682703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3518511680609 is a prime.

It is a super-2 number, since 2×3518511680609² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3518511680603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759255840304 + 1759255840305.

It is an arithmetic number, because the mean of its divisors is an integer number (1759255840305).

Almost surely, 2^{3518511680609} is an apocalyptic number.

It is an amenable number.

3518511680609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3518511680609 is an equidigital number, since it uses as much as digits as its factorization.

3518511680609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 3518511680609 in words is "three trillion, five hundred eighteen billion, five hundred eleven million, six hundred eighty thousand, six hundred nine".