13123335043129 has 4 divisors (see below), whose sum is σ = 13124676770020. Its totient is φ = 13121993316240.

The previous prime is 13123335043057. The next prime is 13123335043171. The reversal of 13123335043129 is 92134053332131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4985306528400 + 8138028514729 = 2232780^2 + 2852723^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123335043129 - 2²⁷ = 13123200825401 is a prime.

It is a super-2 number, since 2×13123335043129² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123335043091 and 13123335043100.

It is not an unprimeable number, because it can be changed into a prime (13123335443129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670848774 + ... + 670868335.

It is an arithmetic number, because the mean of its divisors is an integer number (3281169192505).

Almost surely, 2^{13123335043129} is an apocalyptic number.

It is an amenable number.

13123335043129 is a deficient number, since it is larger than the sum of its proper divisors (1341726891).

13123335043129 is an equidigital number, since it uses as much as digits as its factorization.

13123335043129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341726890.

The product of its (nonzero) digits is 174960, while the sum is 40.

The spelling of 13123335043129 in words is "thirteen trillion, one hundred twenty-three billion, three hundred thirty-five million, forty-three thousand, one hundred twenty-nine".