13855316379549 has 8 divisors (see below), whose sum is σ = 19446058076640. Its totient is φ = 8750726134416.

The previous prime is 13855316379547. The next prime is 13855316379623. The reversal of 13855316379549 is 94597361355831.

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

It is not a de Polignac number, because 13855316379549 - 2¹ = 13855316379547 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855316379547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121537862922 + ... + 121537863035.

It is an arithmetic number, because the mean of its divisors is an integer number (2430757259580).

Almost surely, 2^{13855316379549} is an apocalyptic number.

13855316379549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13855316379549 is a deficient number, since it is larger than the sum of its proper divisors (5590741697091).

13855316379549 is a wasteful number, since it uses less digits than its factorization.

13855316379549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243075725979.

The product of its digits is 367416000, while the sum is 69.

The spelling of 13855316379549 in words is "thirteen trillion, eight hundred fifty-five billion, three hundred sixteen million, three hundred seventy-nine thousand, five hundred forty-nine".