13505121005 has 8 divisors (see below), whose sum is σ = 16207575552. Its totient is φ = 10803143248.

The previous prime is 13505120963. The next prime is 13505121029. The reversal of 13505121005 is 50012150531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13505121005 - 2¹⁰ = 13505119981 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, 53597 + ... + 172866.

It is an arithmetic number, because the mean of its divisors is an integer number (2025946944).

Almost surely, 2^13505121005 is an apocalyptic number.

It is an amenable number.

13505121005 is a deficient number, since it is larger than the sum of its proper divisors (2702454547).

13505121005 is a wasteful number, since it uses less digits than its factorization.

13505121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238395.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 13505121005 its reverse (50012150531), we get a palindrome (63517271536).

The spelling of 13505121005 in words is "thirteen billion, five hundred five million, one hundred twenty-one thousand, five".