13361563105505 has 16 divisors (see below), whose sum is σ = 16260158246400. Its totient is φ = 10538403865920.

The previous prime is 13361563105477. The next prime is 13361563105507. The reversal of 13361563105505 is 50550136516331.

It is not a de Polignac number, because 13361563105505 - 2²⁸ = 13361294670049 is a prime.

It is a super-2 number, since 2×13361563105505² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13361563105507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12696056 + ... + 13708134.

It is an arithmetic number, because the mean of its divisors is an integer number (1016259890400).

Almost surely, 2^{13361563105505} is an apocalyptic number.

It is an amenable number.

13361563105505 is a deficient number, since it is larger than the sum of its proper divisors (2898595140895).

13361563105505 is a wasteful number, since it uses less digits than its factorization.

13361563105505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049344.

The product of its (nonzero) digits is 607500, while the sum is 44.

The spelling of 13361563105505 in words is "thirteen trillion, three hundred sixty-one billion, five hundred sixty-three million, one hundred five thousand, five hundred five".