16636055545 has 4 divisors (see below), whose sum is σ = 19963266660. Its totient is φ = 13308844432.

The previous prime is 16636055539. The next prime is 16636055561. The reversal of 16636055545 is 54555063661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6872244201 + 9763811344 = 82899^2 + 98812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16636055545 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16636055495 and 16636055504.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1663605550 + ... + 1663605559.

It is an arithmetic number, because the mean of its divisors is an integer number (4990816665).

Almost surely, 2^16636055545 is an apocalyptic number.

It is an amenable number.

16636055545 is a deficient number, since it is larger than the sum of its proper divisors (3327211115).

16636055545 is an equidigital number, since it uses as much as digits as its factorization.

16636055545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327211114.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 16636055545 in words is "sixteen billion, six hundred thirty-six million, fifty-five thousand, five hundred forty-five".