20450420433133 has 2 divisors, whose sum is σ = 20450420433134. Its totient is φ = 20450420433132.

The previous prime is 20450420433101. The next prime is 20450420433139. The reversal of 20450420433133 is 33133402405402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17129814437124 + 3320605996009 = 4138818^2 + 1822253^2 .

It is a cyclic number.

It is not a de Polignac number, because 20450420433133 - 2⁵ = 20450420433101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20450420433139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10225210216566 + 10225210216567.

It is an arithmetic number, because the mean of its divisors is an integer number (10225210216567).

Almost surely, 2^{20450420433133} is an apocalyptic number.

It is an amenable number.

20450420433133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20450420433133 is an equidigital number, since it uses as much as digits as its factorization.

20450420433133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 20450420433133 its reverse (33133402405402), we get a palindrome (53583822838535).

The spelling of 20450420433133 in words is "twenty trillion, four hundred fifty billion, four hundred twenty million, four hundred thirty-three thousand, one hundred thirty-three".