16541818226 has 4 divisors (see below), whose sum is σ = 24812727342. Its totient is φ = 8270909112.

The previous prime is 16541818187. The next prime is 16541818243. The reversal of 16541818226 is 62281814561.

16541818226 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 128615²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62281814561 = 21139 ⋅2946299.

It can be written as a sum of positive squares in only one way, i.e., 16541818225 + 1 = 128615^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135454555 + ... + 4135454558.

Almost surely, 2^16541818226 is an apocalyptic number.

16541818226 is a deficient number, since it is larger than the sum of its proper divisors (8270909116).

16541818226 is an equidigital number, since it uses as much as digits as its factorization.

16541818226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270909115.

The product of its digits is 184320, while the sum is 44.

The spelling of 16541818226 in words is "sixteen billion, five hundred forty-one million, eight hundred eighteen thousand, two hundred twenty-six".