12392778089226 has 64 divisors (see below), whose sum is σ = 26685774839808. Its totient is φ = 3827381150208.

The previous prime is 12392778089221. The next prime is 12392778089233. The reversal of 12392778089226 is 62298087729321.

It is not an unprimeable number, because it can be changed into a prime (12392778089221) 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 31 ways as a sum of consecutive naturals, for example, 9219810 + ... + 10478093.

It is an arithmetic number, because the mean of its divisors is an integer number (416965231872).

Almost surely, 2^{12392778089226} is an apocalyptic number.

12392778089226 is an abundant number, since it is smaller than the sum of its proper divisors (14292996750582).

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

12392778089226 is a wasteful number, since it uses less digits than its factorization.

12392778089226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19698075.

The product of its (nonzero) digits is 73156608, while the sum is 66.

The spelling of 12392778089226 in words is "twelve trillion, three hundred ninety-two billion, seven hundred seventy-eight million, eighty-nine thousand, two hundred twenty-six".