20633915033 has 2 divisors, whose sum is σ = 20633915034. Its totient is φ = 20633915032.

The previous prime is 20633915021. The next prime is 20633915063. The reversal of 20633915033 is 33051933602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18864198409 + 1769716624 = 137347^2 + 42068^2 .

It is a cyclic number.

It is not a de Polignac number, because 20633915033 - 2⁴ = 20633915017 is a prime.

It is a super-3 number, since 3×20633915033³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20633914984 and 20633915002.

It is not a weakly prime, because it can be changed into another prime (20633915063) 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 as a sum of consecutive naturals, namely, 10316957516 + 10316957517.

It is an arithmetic number, because the mean of its divisors is an integer number (10316957517).

Almost surely, 2^20633915033 is an apocalyptic number.

It is an amenable number.

20633915033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633915033 is an equidigital number, since it uses as much as digits as its factorization.

20633915033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 35.

The spelling of 20633915033 in words is "twenty billion, six hundred thirty-three million, nine hundred fifteen thousand, thirty-three".