13361661505 has 8 divisors (see below), whose sum is σ = 16034802624. Its totient is φ = 10688790000.

The previous prime is 13361661497. The next prime is 13361661529. The reversal of 13361661505 is 50516616331.

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

It is not a de Polignac number, because 13361661505 - 2³ = 13361661497 is a prime.

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, 65430 + ... + 176080.

It is an arithmetic number, because the mean of its divisors is an integer number (2004350328).

Almost surely, 2^13361661505 is an apocalyptic number.

It is an amenable number.

13361661505 is a deficient number, since it is larger than the sum of its proper divisors (2673141119).

13361661505 is a wasteful number, since it uses less digits than its factorization.

13361661505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134807.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 13361661505 in words is "thirteen billion, three hundred sixty-one million, six hundred sixty-one thousand, five hundred five".