16554433275625 has 80 divisors (see below), whose sum is σ = 24893483535360. Its totient is φ = 10750889160000.

The previous prime is 16554433275617. The next prime is 16554433275629. The reversal of 16554433275625 is 52657233445561.

It is a happy number.

It is not a de Polignac number, because 16554433275625 - 2³ = 16554433275617 is a prime.

It is a super-2 number, since 2×16554433275625² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16554433275625.

It is not an unprimeable number, because it can be changed into a prime (16554433275629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 290160852 + ... + 290217898.

It is an arithmetic number, because the mean of its divisors is an integer number (311168544192).

Almost surely, 2^{16554433275625} is an apocalyptic number.

It is an amenable number.

16554433275625 is a deficient number, since it is larger than the sum of its proper divisors (8339050259735).

16554433275625 is an equidigital number, since it uses as much as digits as its factorization.

16554433275625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60584 (or 60569 counting only the distinct ones).

The product of its digits is 90720000, while the sum is 58.

The spelling of 16554433275625 in words is "sixteen trillion, five hundred fifty-four billion, four hundred thirty-three million, two hundred seventy-five thousand, six hundred twenty-five".