13861173605 has 8 divisors (see below), whose sum is σ = 17039101464. Its totient is φ = 10818476800.

The previous prime is 13861173577. The next prime is 13861173617. The reversal of 13861173605 is 50637116831.

13861173605 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 367795684 + 13493377921 = 19178^2 + 116161^2 .

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

It is not a de Polignac number, because 13861173605 - 2⁶ = 13861173541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

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, 33807536 + ... + 33807945.

It is an arithmetic number, because the mean of its divisors is an integer number (2129887683).

Almost surely, 2^13861173605 is an apocalyptic number.

It is an amenable number.

13861173605 is a deficient number, since it is larger than the sum of its proper divisors (3177927859).

13861173605 is an equidigital number, since it uses as much as digits as its factorization.

13861173605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67615527.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 13861173605 in words is "thirteen billion, eight hundred sixty-one million, one hundred seventy-three thousand, six hundred five".