16650452557 has 2 divisors, whose sum is σ = 16650452558. Its totient is φ = 16650452556.

The previous prime is 16650452471. The next prime is 16650452569. The reversal of 16650452557 is 75525405661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11642625801 + 5007826756 = 107901^2 + 70766^2 .

It is a cyclic number.

It is not a de Polignac number, because 16650452557 - 2¹⁵ = 16650419789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16650452587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325226278 + 8325226279.

It is an arithmetic number, because the mean of its divisors is an integer number (8325226279).

Almost surely, 2^16650452557 is an apocalyptic number.

It is an amenable number.

16650452557 is a deficient number, since it is larger than the sum of its proper divisors (1).

16650452557 is an equidigital number, since it uses as much as digits as its factorization.

16650452557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 16650452557 in words is "sixteen billion, six hundred fifty million, four hundred fifty-two thousand, five hundred fifty-seven".