12705880235205 has 16 divisors (see below), whose sum is σ = 21399377238720. Its totient is φ = 6419813171328.

The previous prime is 12705880235197. The next prime is 12705880235207. The reversal of 12705880235205 is 50253208850721.

It is not a de Polignac number, because 12705880235205 - 2³ = 12705880235197 is a prime.

It is a super-2 number, since 2×12705880235205² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705880235207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22291017672 + ... + 22291018241.

It is an arithmetic number, because the mean of its divisors is an integer number (1337461077420).

Almost surely, 2^{12705880235205} is an apocalyptic number.

12705880235205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12705880235205 is a deficient number, since it is larger than the sum of its proper divisors (8693497003515).

12705880235205 is a wasteful number, since it uses less digits than its factorization.

12705880235205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44582035940.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 12705880235205 in words is "twelve trillion, seven hundred five billion, eight hundred eighty million, two hundred thirty-five thousand, two hundred five".