13155243424205 has 8 divisors (see below), whose sum is σ = 15786337594104. Its totient is φ = 10524164416000.

The previous prime is 13155243424159. The next prime is 13155243424237. The reversal of 13155243424205 is 50242434255131.

It can be written as a sum of positive squares in 4 ways, for example, as 963092965129 + 12192150459076 = 981373^2 + 3491726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13155243424205 - 2²⁰ = 13155242375629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785116 + ... + 5431125.

It is an arithmetic number, because the mean of its divisors is an integer number (1973292199263).

Almost surely, 2^{13155243424205} is an apocalyptic number.

It is an amenable number.

13155243424205 is a deficient number, since it is larger than the sum of its proper divisors (2631094169899).

13155243424205 is an equidigital number, since it uses as much as digits as its factorization.

13155243424205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580847.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 13155243424205 its reverse (50242434255131), we get a palindrome (63397677679336).

The spelling of 13155243424205 in words is "thirteen trillion, one hundred fifty-five billion, two hundred forty-three million, four hundred twenty-four thousand, two hundred five".