20130004433 has 18 divisors (see below), whose sum is σ = 25738844418. Its totient is φ = 15685713120.

The previous prime is 20130004417. The next prime is 20130004439. The reversal of 20130004433 is 33440003102.

It can be written as a sum of positive squares in only one way, i.e., 18869967424 + 1260037009 = 137368^2 + 35497^2 .

It is not a de Polignac number, because 20130004433 - 2⁴ = 20130004417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20130004439) 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 17 ways as a sum of consecutive naturals, for example, 1691660 + ... + 1703517.

It is an arithmetic number, because the mean of its divisors is an integer number (1429935801).

Almost surely, 2^20130004433 is an apocalyptic number.

It is an amenable number.

20130004433 is a deficient number, since it is larger than the sum of its proper divisors (5608839985).

20130004433 is a wasteful number, since it uses less digits than its factorization.

20130004433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395213 (or 3395195 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20130004433 its reverse (33440003102), we get a palindrome (53570007535).

The spelling of 20130004433 in words is "twenty billion, one hundred thirty million, four thousand, four hundred thirty-three".