12223555578 has 48 divisors (see below), whose sum is σ = 28540512000. Its totient is φ = 3758604192.

The previous prime is 12223555571. The next prime is 12223555583. The reversal of 12223555578 is 87555532221.

12223555578 is a `hidden beast` number, since 1 + 2 + 2 + 23 + 5 + 55 + 578 = 666.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12223555571) 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 23 ways as a sum of consecutive naturals, for example, 353923 + ... + 386921.

It is an arithmetic number, because the mean of its divisors is an integer number (594594000).

Almost surely, 2^12223555578 is an apocalyptic number.

12223555578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12223555578 is an abundant number, since it is smaller than the sum of its proper divisors (16316956422).

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

12223555578 is a wasteful number, since it uses less digits than its factorization.

12223555578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34603 (or 34600 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The spelling of 12223555578 in words is "twelve billion, two hundred twenty-three million, five hundred fifty-five thousand, five hundred seventy-eight".