13681854505 has 8 divisors (see below), whose sum is σ = 17910791424. Its totient is φ = 9950439600.

The previous prime is 13681854499. The next prime is 13681854521. The reversal of 13681854505 is 50545818631.

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

It is not a de Polignac number, because 13681854505 - 2¹⁹ = 13681330217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124380441 + ... + 124380550.

It is an arithmetic number, because the mean of its divisors is an integer number (2238848928).

Almost surely, 2^13681854505 is an apocalyptic number.

It is an amenable number.

13681854505 is a deficient number, since it is larger than the sum of its proper divisors (4228936919).

13681854505 is a wasteful number, since it uses less digits than its factorization.

13681854505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248761007.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 13681854505 in words is "thirteen billion, six hundred eighty-one million, eight hundred fifty-four thousand, five hundred five".