12617355078243 has 24 divisors (see below), whose sum is σ = 18432015825600. Its totient is φ = 8316078148224.

The previous prime is 12617355078221. The next prime is 12617355078389. The reversal of 12617355078243 is 34287055371621.

12617355078243 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 7 + 3 + 550 + 7 + 82 + 4 + 3 = 666.

It is not a de Polignac number, because 12617355078243 - 2¹³ = 12617355070051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12617355078243.

It is not an unprimeable number, because it can be changed into a prime (12617355008243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5906473 + ... + 7753781.

It is an arithmetic number, because the mean of its divisors is an integer number (768000659400).

Almost surely, 2^{12617355078243} is an apocalyptic number.

12617355078243 is a deficient number, since it is larger than the sum of its proper divisors (5814660747357).

12617355078243 is a wasteful number, since it uses less digits than its factorization.

12617355078243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855931 (or 1855928 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 12617355078243 in words is "twelve trillion, six hundred seventeen billion, three hundred fifty-five million, seventy-eight thousand, two hundred forty-three".