13451011505 has 8 divisors (see below), whose sum is σ = 16249545000. Its totient is φ = 10688588416.

The previous prime is 13451011499. The next prime is 13451011517. The reversal of 13451011505 is 50511015431.

13451011505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1083792241 + 12367219264 = 32921^2 + 111208^2 .

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 13451011505 - 2¹⁰ = 13451010481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9026780 + ... + 9028269.

It is an arithmetic number, because the mean of its divisors is an integer number (2031193125).

Almost surely, 2^13451011505 is an apocalyptic number.

It is an amenable number.

13451011505 is a deficient number, since it is larger than the sum of its proper divisors (2798533495).

13451011505 is a wasteful number, since it uses less digits than its factorization.

13451011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18055203.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 13451011505 its reverse (50511015431), we get a palindrome (63962026936).

The spelling of 13451011505 in words is "thirteen billion, four hundred fifty-one million, eleven thousand, five hundred five".