13205305151123 has 4 divisors (see below), whose sum is σ = 13231768689000. Its totient is φ = 13178841613248.

The previous prime is 13205305151107. The next prime is 13205305151183. The reversal of 13205305151123 is 32115150350231.

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

It is a cyclic number.

It is not a de Polignac number, because 13205305151123 - 2⁴ = 13205305151107 is a prime.

It is a super-2 number, since 2×13205305151123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13205305151123.

It is not an unprimeable number, because it can be changed into a prime (13205305151183) 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 in 3 ways as a sum of consecutive naturals, for example, 13231768190 + ... + 13231769187.

It is an arithmetic number, because the mean of its divisors is an integer number (3307942172250).

Almost surely, 2^{13205305151123} is an apocalyptic number.

13205305151123 is a deficient number, since it is larger than the sum of its proper divisors (26463537877).

13205305151123 is an equidigital number, since it uses as much as digits as its factorization.

13205305151123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26463537876.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 13205305151123 in words is "thirteen trillion, two hundred five billion, three hundred five million, one hundred fifty-one thousand, one hundred twenty-three".