12681851 has 8 divisors (see below), whose sum is σ = 15608544. Its totient is φ = 10033920.

The previous prime is 12681829. The next prime is 12681853. The reversal of 12681851 is 15818621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12681851 - 2¹⁴ = 12665467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12681853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69590 + ... + 69771.

It is an arithmetic number, because the mean of its divisors is an integer number (1951068).

Almost surely, 2^12681851 is an apocalyptic number.

12681851 is a deficient number, since it is larger than the sum of its proper divisors (2926693).

12681851 is a wasteful number, since it uses less digits than its factorization.

12681851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139381.

The product of its digits is 3840, while the sum is 32.

The square root of 12681851 is about 3561.1586597623. The cubic root of 12681851 is about 233.1994644808.

The spelling of 12681851 in words is "twelve million, six hundred eighty-one thousand, eight hundred fifty-one".