13561098905 has 8 divisors (see below), whose sum is σ = 16274882184. Its totient is φ = 10847836800.

The previous prime is 13561098877. The next prime is 13561098937. The reversal of 13561098905 is 50989016531.

13561098905 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 1854508096 + 11706590809 = 43064^2 + 108197^2 .

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

It is not a de Polignac number, because 13561098905 - 2¹⁰ = 13561097881 is a prime.

It is a super-2 number, since 2×13561098905² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13561098905.

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, 70556 + ... + 179165.

It is an arithmetic number, because the mean of its divisors is an integer number (2034360273).

Almost surely, 2^13561098905 is an apocalyptic number.

It is an amenable number.

13561098905 is a deficient number, since it is larger than the sum of its proper divisors (2713783279).

13561098905 is a wasteful number, since it uses less digits than its factorization.

13561098905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260587.

The product of its (nonzero) digits is 291600, while the sum is 47.

The spelling of 13561098905 in words is "thirteen billion, five hundred sixty-one million, ninety-eight thousand, nine hundred five".