12278894456229 has 4 divisors (see below), whose sum is σ = 16371859274976. Its totient is φ = 8185929637484.

The previous prime is 12278894456197. The next prime is 12278894456233. The reversal of 12278894456229 is 92265449887221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12278894456229 - 2⁵ = 12278894456197 is a prime.

It is a super-2 number, since 2×12278894456229² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278894456429) 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 3 ways as a sum of consecutive naturals, for example, 2046482409369 + ... + 2046482409374.

It is an arithmetic number, because the mean of its divisors is an integer number (4092964818744).

Almost surely, 2^{12278894456229} is an apocalyptic number.

It is an amenable number.

12278894456229 is a deficient number, since it is larger than the sum of its proper divisors (4092964818747).

12278894456229 is an equidigital number, since it uses as much as digits as its factorization.

12278894456229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092964818746.

The product of its digits is 278691840, while the sum is 69.

The spelling of 12278894456229 in words is "twelve trillion, two hundred seventy-eight billion, eight hundred ninety-four million, four hundred fifty-six thousand, two hundred twenty-nine".