12861933252861 has 64 divisors (see below), whose sum is σ = 21734408908800. Its totient is φ = 6571075276800.

The previous prime is 12861933252851. The next prime is 12861933252893. The reversal of 12861933252861 is 16825233916821.

It is not a de Polignac number, because 12861933252861 - 2⁹ = 12861933252349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861933252811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107581405 + ... + 107700893.

It is an arithmetic number, because the mean of its divisors is an integer number (339600139200).

Almost surely, 2^{12861933252861} is an apocalyptic number.

12861933252861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12861933252861 is a deficient number, since it is larger than the sum of its proper divisors (8872475655939).

12861933252861 is a wasteful number, since it uses less digits than its factorization.

12861933252861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127210.

The product of its digits is 7464960, while the sum is 57.

The spelling of 12861933252861 in words is "twelve trillion, eight hundred sixty-one billion, nine hundred thirty-three million, two hundred fifty-two thousand, eight hundred sixty-one".