20123133033253 has 2 divisors, whose sum is σ = 20123133033254. Its totient is φ = 20123133033252.

The previous prime is 20123133033217. The next prime is 20123133033281. The reversal of 20123133033253 is 35233033132102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15376734857124 + 4746398176129 = 3921318^2 + 2178623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123133033253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123133033853) 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, 10061566516626 + 10061566516627.

It is an arithmetic number, because the mean of its divisors is an integer number (10061566516627).

Almost surely, 2^{20123133033253} is an apocalyptic number.

It is an amenable number.

20123133033253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123133033253 is an equidigital number, since it uses as much as digits as its factorization.

20123133033253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 31.

Adding to 20123133033253 its reverse (35233033132102), we get a palindrome (55356166165355).

The spelling of 20123133033253 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, thirty-three thousand, two hundred fifty-three".