30324720509 has 2 divisors, whose sum is σ = 30324720510. Its totient is φ = 30324720508.

The previous prime is 30324720487. The next prime is 30324720527. The reversal of 30324720509 is 90502742303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25361518009 + 4963202500 = 159253^2 + 70450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30324720509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30324720409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15162360254 + 15162360255.

It is an arithmetic number, because the mean of its divisors is an integer number (15162360255).

Almost surely, 2^30324720509 is an apocalyptic number.

It is an amenable number.

30324720509 is a deficient number, since it is larger than the sum of its proper divisors (1).

30324720509 is an equidigital number, since it uses as much as digits as its factorization.

30324720509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 30324720509 in words is "thirty billion, three hundred twenty-four million, seven hundred twenty thousand, five hundred nine".