12705981875 has 30 divisors (see below), whose sum is σ = 16174057020. Its totient is φ = 9975478000.

The previous prime is 12705981803. The next prime is 12705981887. The reversal of 12705981875 is 57818950721.

It is not a de Polignac number, because 12705981875 - 2²⁴ = 12689204659 is a prime.

It is a super-2 number, since 2×12705981875² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21645332 + ... + 21645918.

It is an arithmetic number, because the mean of its divisors is an integer number (539135234).

Almost surely, 2^12705981875 is an apocalyptic number.

12705981875 is a deficient number, since it is larger than the sum of its proper divisors (3468075145).

12705981875 is an frugal number, since it uses more digits than its factorization.

12705981875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 12705981875 in words is "twelve billion, seven hundred five million, nine hundred eighty-one thousand, eight hundred seventy-five".