12947778550603 has 16 divisors (see below), whose sum is σ = 14126753108160. Its totient is φ = 11795632091136.

The previous prime is 12947778550591. The next prime is 12947778550627. The reversal of 12947778550603 is 30605587774921.

It is a cyclic number.

It is not a de Polignac number, because 12947778550603 - 2¹⁷ = 12947778419531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12947778550403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13847950 + ... + 14753347.

It is an arithmetic number, because the mean of its divisors is an integer number (882922069260).

It is a 1-persistent number, because it is pandigital, but 2⋅12947778550603 = 25895557101206 is not.

Almost surely, 2^{12947778550603} is an apocalyptic number.

12947778550603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12947778550603 is a deficient number, since it is larger than the sum of its proper divisors (1178974557557).

12947778550603 is a wasteful number, since it uses less digits than its factorization.

12947778550603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28601766.

The product of its (nonzero) digits is 88905600, while the sum is 64.

The spelling of 12947778550603 in words is "twelve trillion, nine hundred forty-seven billion, seven hundred seventy-eight million, five hundred fifty thousand, six hundred three".