12456277780422 has 32 divisors (see below), whose sum is σ = 28475194731264. Its totient is φ = 3558473676000.

The previous prime is 12456277780411. The next prime is 12456277780451. The reversal of 12456277780422 is 22408777265421.

It is a super-2 number, since 2×12456277780422² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18957829 + ... + 19603872.

It is an arithmetic number, because the mean of its divisors is an integer number (889849835352).

Almost surely, 2^{12456277780422} is an apocalyptic number.

12456277780422 is an abundant number, since it is smaller than the sum of its proper divisors (16018916950842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12456277780422 is a wasteful number, since it uses less digits than its factorization.

12456277780422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38569404.

The product of its (nonzero) digits is 21073920, while the sum is 57.

The spelling of 12456277780422 in words is "twelve trillion, four hundred fifty-six billion, two hundred seventy-seven million, seven hundred eighty thousand, four hundred twenty-two".