12786222426919 has 16 divisors (see below), whose sum is σ = 13465470332160. Its totient is φ = 12107604600000.

The previous prime is 12786222426917. The next prime is 12786222426931. The reversal of 12786222426919 is 91962422268721.

It is a cyclic number.

It is not a de Polignac number, because 12786222426919 - 2¹ = 12786222426917 is a prime.

It is a super-2 number, since 2×12786222426919² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786222426911) 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, 743765614 + ... + 743782804.

It is an arithmetic number, because the mean of its divisors is an integer number (841591895760).

Almost surely, 2^{12786222426919} is an apocalyptic number.

12786222426919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12786222426919 is a deficient number, since it is larger than the sum of its proper divisors (679247905241).

12786222426919 is a wasteful number, since it uses less digits than its factorization.

12786222426919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33222.

The product of its digits is 20901888, while the sum is 61.

The spelling of 12786222426919 in words is "twelve trillion, seven hundred eighty-six billion, two hundred twenty-two million, four hundred twenty-six thousand, nine hundred nineteen".