12851222785 has 8 divisors (see below), whose sum is σ = 15423621696. Its totient is φ = 10279542000.

The previous prime is 12851222771. The next prime is 12851222789. The reversal of 12851222785 is 58722215821.

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

It is not a de Polignac number, because 12851222785 - 2⁹ = 12851222273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12851222789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139341 + ... + 212410.

It is an arithmetic number, because the mean of its divisors is an integer number (1927952712).

Almost surely, 2^12851222785 is an apocalyptic number.

It is an amenable number.

12851222785 is a deficient number, since it is larger than the sum of its proper divisors (2572398911).

12851222785 is an equidigital number, since it uses as much as digits as its factorization.

12851222785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359063.

The product of its digits is 179200, while the sum is 43.

The spelling of 12851222785 in words is "twelve billion, eight hundred fifty-one million, two hundred twenty-two thousand, seven hundred eighty-five".