13855316381749 has 8 divisors (see below), whose sum is σ = 13857616979360. Its totient is φ = 13853015981136.

The previous prime is 13855316381741. The next prime is 13855316381759. The reversal of 13855316381749 is 94718361355831.

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

It is a cyclic number.

It is not a de Polignac number, because 13855316381749 - 2³ = 13855316381741 is a prime.

It is a super-2 number, since 2×13855316381749² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13855316381741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205446367 + ... + 205513795.

It is an arithmetic number, because the mean of its divisors is an integer number (1732202122420).

Almost surely, 2^{13855316381749} is an apocalyptic number.

It is an amenable number.

13855316381749 is a deficient number, since it is larger than the sum of its proper divisors (2300597611).

13855316381749 is an equidigital number, since it uses as much as digits as its factorization.

13855316381749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98499.

The product of its digits is 65318400, while the sum is 64.

The spelling of 13855316381749 in words is "thirteen trillion, eight hundred fifty-five billion, three hundred sixteen million, three hundred eighty-one thousand, seven hundred forty-nine".