30120253533 has 12 divisors (see below), whose sum is σ = 44119808928. Its totient is φ = 19797349320.

The previous prime is 30120253531. The next prime is 30120253613. The reversal of 30120253533 is 33535202103.

30120253533 is a `hidden beast` number, since 3 + 0 + 120 + 2 + 5 + 3 + 533 = 666.

It is not a de Polignac number, because 30120253533 - 2¹ = 30120253531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30120253497 and 30120253506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120253531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23567635 + ... + 23568912.

It is an arithmetic number, because the mean of its divisors is an integer number (3676650744).

Almost surely, 2^30120253533 is an apocalyptic number.

It is an amenable number.

30120253533 is a deficient number, since it is larger than the sum of its proper divisors (13999555395).

30120253533 is a wasteful number, since it uses less digits than its factorization.

30120253533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47136624 (or 47136621 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

Adding to 30120253533 its reverse (33535202103), we get a palindrome (63655455636).

The spelling of 30120253533 in words is "thirty billion, one hundred twenty million, two hundred fifty-three thousand, five hundred thirty-three".