30661410809 has 2 divisors, whose sum is σ = 30661410810. Its totient is φ = 30661410808.

The previous prime is 30661410779. The next prime is 30661410833. The reversal of 30661410809 is 90801416603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29007199225 + 1654211584 = 170315^2 + 40672^2 .

It is a cyclic number.

It is not a de Polignac number, because 30661410809 - 2³² = 26366443513 is a prime.

It is a super-3 number, since 3×30661410809³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (30661410889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15330705404 + 15330705405.

It is an arithmetic number, because the mean of its divisors is an integer number (15330705405).

Almost surely, 2^30661410809 is an apocalyptic number.

It is an amenable number.

30661410809 is a deficient number, since it is larger than the sum of its proper divisors (1).

30661410809 is an equidigital number, since it uses as much as digits as its factorization.

30661410809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 30661410809 in words is "thirty billion, six hundred sixty-one million, four hundred ten thousand, eight hundred nine".