12620994171385 has 16 divisors (see below), whose sum is σ = 15813865742400. Its totient is φ = 9657521277376.

The previous prime is 12620994171307. The next prime is 12620994171397. The reversal of 12620994171385 is 58317149902621.

It is a cyclic number.

It is not a de Polignac number, because 12620994171385 - 2¹¹ = 12620994169337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406719715 + ... + 406750744.

It is an arithmetic number, because the mean of its divisors is an integer number (988366608900).

It is a 1-persistent number, because it is pandigital, but 2⋅12620994171385 = 25241988342770 is not.

Almost surely, 2^{12620994171385} is an apocalyptic number.

It is an amenable number.

12620994171385 is a deficient number, since it is larger than the sum of its proper divisors (3192871571015).

12620994171385 is a wasteful number, since it uses less digits than its factorization.

12620994171385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813470600.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 12620994171385 in words is "twelve trillion, six hundred twenty billion, nine hundred ninety-four million, one hundred seventy-one thousand, three hundred eighty-five".