16555224773121 has 8 divisors (see below), whose sum is σ = 22107962167200. Its totient is φ = 11019651947232.

The previous prime is 16555224773063. The next prime is 16555224773123. The reversal of 16555224773121 is 12137742255561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16555224773121 - 2¹⁷ = 16555224642049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16555224773123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4291139796 + ... + 4291143653.

It is an arithmetic number, because the mean of its divisors is an integer number (2763495270900).

Almost surely, 2^{16555224773121} is an apocalyptic number.

It is an amenable number.

16555224773121 is a deficient number, since it is larger than the sum of its proper divisors (5552737394079).

16555224773121 is an equidigital number, since it uses as much as digits as its factorization.

16555224773121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582284095.

The product of its digits is 3528000, while the sum is 51.

The spelling of 16555224773121 in words is "sixteen trillion, five hundred fifty-five billion, two hundred twenty-four million, seven hundred seventy-three thousand, one hundred twenty-one".