30305521009 has 16 divisors (see below), whose sum is σ = 31295900160. Its totient is φ = 29327495040.

The previous prime is 30305520967. The next prime is 30305521013. The reversal of 30305521009 is 90012550303.

It is a cyclic number.

It is not a de Polignac number, because 30305521009 - 2⁷ = 30305520881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30305521049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10387819 + ... + 10390735.

It is an arithmetic number, because the mean of its divisors is an integer number (1955993760).

Almost surely, 2^30305521009 is an apocalyptic number.

It is an amenable number.

30305521009 is a deficient number, since it is larger than the sum of its proper divisors (990379151).

30305521009 is a wasteful number, since it uses less digits than its factorization.

30305521009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920.

The product of its (nonzero) digits is 4050, while the sum is 28.

The spelling of 30305521009 in words is "thirty billion, three hundred five million, five hundred twenty-one thousand, nine".