16851224452 has 6 divisors (see below), whose sum is σ = 29489642798. Its totient is φ = 8425612224.

The previous prime is 16851224417. The next prime is 16851224461. The reversal of 16851224452 is 25442215861.

16851224452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9507420036 + 7343804416 = 97506^2 + 85696^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2106403053 + ... + 2106403060.

Almost surely, 2^16851224452 is an apocalyptic number.

It is an amenable number.

16851224452 is a deficient number, since it is larger than the sum of its proper divisors (12638418346).

16851224452 is a wasteful number, since it uses less digits than its factorization.

16851224452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212806117 (or 4212806115 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The spelling of 16851224452 in words is "sixteen billion, eight hundred fifty-one million, two hundred twenty-four thousand, four hundred fifty-two".