13123335033506 has 16 divisors (see below), whose sum is σ = 19697891425344. Its totient is φ = 6557371511184.

The previous prime is 13123335033503. The next prime is 13123335033509. The reversal of 13123335033506 is 60533053332131.

It is an interprime number because it is at equal distance from previous prime (13123335033503) and next prime (13123335033509).

It is a super-2 number, since 2×13123335033506² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13123335033506.

It is not an unprimeable number, because it can be changed into a prime (13123335033503) 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 in 7 ways as a sum of consecutive naturals, for example, 129515195 + ... + 129616481.

It is an arithmetic number, because the mean of its divisors is an integer number (1231118214084).

Almost surely, 2^{13123335033506} is an apocalyptic number.

13123335033506 is a deficient number, since it is larger than the sum of its proper divisors (6574556391838).

13123335033506 is a wasteful number, since it uses less digits than its factorization.

13123335033506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143065.

The product of its (nonzero) digits is 218700, while the sum is 38.

Adding to 13123335033506 its reverse (60533053332131), we get a palindrome (73656388365637).

The spelling of 13123335033506 in words is "thirteen trillion, one hundred twenty-three billion, three hundred thirty-five million, thirty-three thousand, five hundred six".