20433533123 has 2 divisors, whose sum is σ = 20433533124. Its totient is φ = 20433533122.

The previous prime is 20433533089. The next prime is 20433533143. The reversal of 20433533123 is 32133533402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20433533123 - 2³⁰ = 19359791299 is a prime.

It is not a weakly prime, because it can be changed into another prime (20433533143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216766561 + 10216766562.

It is an arithmetic number, because the mean of its divisors is an integer number (10216766562).

Almost surely, 2^20433533123 is an apocalyptic number.

20433533123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433533123 is an equidigital number, since it uses as much as digits as its factorization.

20433533123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 29.

The spelling of 20433533123 in words is "twenty billion, four hundred thirty-three million, five hundred thirty-three thousand, one hundred twenty-three".