13505121145 has 8 divisors (see below), whose sum is σ = 16208917056. Its totient is φ = 10802249136.

The previous prime is 13505121121. The next prime is 13505121167. The reversal of 13505121145 is 54112150531.

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 13505121145 - 2⁹ = 13505120633 is a prime.

It is a super-2 number, since 2×13505121145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 198397 + ... + 257626.

It is an arithmetic number, because the mean of its divisors is an integer number (2026114632).

Almost surely, 2^13505121145 is an apocalyptic number.

It is an amenable number.

13505121145 is a deficient number, since it is larger than the sum of its proper divisors (2703795911).

13505121145 is an equidigital number, since it uses as much as digits as its factorization.

13505121145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461951.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 13505121145 its reverse (54112150531), we get a palindrome (67617271676).

The spelling of 13505121145 in words is "thirteen billion, five hundred five million, one hundred twenty-one thousand, one hundred forty-five".