30512556009 has 32 divisors (see below), whose sum is σ = 48691448960. Its totient is φ = 18772928064.

The previous prime is 30512556007. The next prime is 30512556047. The reversal of 30512556009 is 90065521503.

30512556009 is a `hidden beast` number, since 30 + 5 + 12 + 5 + 5 + 600 + 9 = 666.

It is not a de Polignac number, because 30512556009 - 2¹ = 30512556007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30512556007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3169287 + ... + 3178899.

It is an arithmetic number, because the mean of its divisors is an integer number (1521607780).

Almost surely, 2^30512556009 is an apocalyptic number.

30512556009 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30512556009 is a deficient number, since it is larger than the sum of its proper divisors (18178892951).

30512556009 is a wasteful number, since it uses less digits than its factorization.

30512556009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18678 (or 18672 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 30512556009 in words is "thirty billion, five hundred twelve million, five hundred fifty-six thousand, nine".