30013665509 has 2 divisors, whose sum is σ = 30013665510. Its totient is φ = 30013665508.

The previous prime is 30013665499. The next prime is 30013665523. The reversal of 30013665509 is 90556631003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29591568484 + 422097025 = 172022^2 + 20545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30013665509 is a prime.

It is a super-2 number, since 2×30013665509² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30013665559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006832754 + 15006832755.

It is an arithmetic number, because the mean of its divisors is an integer number (15006832755).

Almost surely, 2^30013665509 is an apocalyptic number.

It is an amenable number.

30013665509 is a deficient number, since it is larger than the sum of its proper divisors (1).

30013665509 is an equidigital number, since it uses as much as digits as its factorization.

30013665509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 38.

The spelling of 30013665509 in words is "thirty billion, thirteen million, six hundred sixty-five thousand, five hundred nine".