20335505345123 has 2 divisors, whose sum is σ = 20335505345124. Its totient is φ = 20335505345122.

The previous prime is 20335505345119. The next prime is 20335505345143. The reversal of 20335505345123 is 32154350553302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20335505345123 - 2² = 20335505345119 is a prime.

It is a super-2 number, since 2×20335505345123² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20335505345143) 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 as a sum of consecutive naturals, namely, 10167752672561 + 10167752672562.

It is an arithmetic number, because the mean of its divisors is an integer number (10167752672562).

Almost surely, 2^{20335505345123} is an apocalyptic number.

20335505345123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335505345123 is an equidigital number, since it uses as much as digits as its factorization.

20335505345123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 41.

Adding to 20335505345123 its reverse (32154350553302), we get a palindrome (52489855898425).

The spelling of 20335505345123 in words is "twenty trillion, three hundred thirty-five billion, five hundred five million, three hundred forty-five thousand, one hundred twenty-three".