12205473154128 has 80 divisors (see below), whose sum is σ = 35072856116160. Its totient is φ = 4064005263744.

The previous prime is 12205473154123. The next prime is 12205473154201. The reversal of 12205473154128 is 82145137450221.

It is a happy number.

12205473154128 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 5 + 473 + 1 + 54 + 128 = 666.

It is a super-2 number, since 2×12205473154128² (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 (12205473154123) 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 15 ways as a sum of consecutive naturals, for example, 15183375 + ... + 15967022.

It is an arithmetic number, because the mean of its divisors is an integer number (438410701452).

Almost surely, 2^{12205473154128} is an apocalyptic number.

12205473154128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12205473154128 is an abundant number, since it is smaller than the sum of its proper divisors (22867382962032).

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

12205473154128 is a wasteful number, since it uses less digits than its factorization.

12205473154128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31151321 (or 31151309 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 12205473154128 in words is "twelve trillion, two hundred five billion, four hundred seventy-three million, one hundred fifty-four thousand, one hundred twenty-eight".