30048685821 has 48 divisors (see below), whose sum is σ = 55372162560. Its totient is φ = 15246675360.

The previous prime is 30048685747. The next prime is 30048685837. The reversal of 30048685821 is 12858684003.

30048685821 is a `hidden beast` number, since 3 + 0 + 0 + 4 + 8 + 68 + 582 + 1 = 666.

It is not a de Polignac number, because 30048685821 - 2¹⁰ = 30048684797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30048685871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474391 + ... + 533988.

It is an arithmetic number, because the mean of its divisors is an integer number (1153586720).

Almost surely, 2^30048685821 is an apocalyptic number.

It is an amenable number.

30048685821 is a deficient number, since it is larger than the sum of its proper divisors (25323476739).

30048685821 is a wasteful number, since it uses less digits than its factorization.

30048685821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008446 (or 1008443 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 30048685821 in words is "thirty billion, forty-eight million, six hundred eighty-five thousand, eight hundred twenty-one".