30681372033 has 12 divisors (see below), whose sum is σ = 47726578900. Its totient is φ = 18880844256.

The previous prime is 30681372023. The next prime is 30681372037. The reversal of 30681372033 is 33027318603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19234083969 + 11447288064 = 138687^2 + 106992^2 .

It is not a de Polignac number, because 30681372033 - 2⁹ = 30681371521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30681372037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131116858 + ... + 131117091.

Almost surely, 2^30681372033 is an apocalyptic number.

It is an amenable number.

30681372033 is a deficient number, since it is larger than the sum of its proper divisors (17045206867).

30681372033 is a wasteful number, since it uses less digits than its factorization.

30681372033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262233968 (or 262233965 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 30681372033 in words is "thirty billion, six hundred eighty-one million, three hundred seventy-two thousand, thirty-three".