30011821688 has 16 divisors (see below), whose sum is σ = 56300430480. Its totient is φ = 14998373568.

The previous prime is 30011821681. The next prime is 30011821703. The reversal of 30011821688 is 88612811003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011821681) 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 3 ways as a sum of consecutive naturals, for example, 925220 + ... + 957107.

It is an arithmetic number, because the mean of its divisors is an integer number (3518776905).

Almost surely, 2^30011821688 is an apocalyptic number.

It is an amenable number.

30011821688 is a deficient number, since it is larger than the sum of its proper divisors (26288608792).

30011821688 is a wasteful number, since it uses less digits than its factorization.

30011821688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884326 (or 1884322 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 30011821688 in words is "thirty billion, eleven million, eight hundred twenty-one thousand, six hundred eighty-eight".