16606777133 has 2 divisors, whose sum is σ = 16606777134. Its totient is φ = 16606777132.

The previous prime is 16606777129. The next prime is 16606777183. The reversal of 16606777133 is 33177760661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13288786729 + 3317990404 = 115277^2 + 57602^2 .

It is a cyclic number.

It is not a de Polignac number, because 16606777133 - 2² = 16606777129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16606777183) 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 as a sum of consecutive naturals, namely, 8303388566 + 8303388567.

It is an arithmetic number, because the mean of its divisors is an integer number (8303388567).

Almost surely, 2^16606777133 is an apocalyptic number.

It is an amenable number.

16606777133 is a deficient number, since it is larger than the sum of its proper divisors (1).

16606777133 is an equidigital number, since it uses as much as digits as its factorization.

16606777133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 47.

The spelling of 16606777133 in words is "sixteen billion, six hundred six million, seven hundred seventy-seven thousand, one hundred thirty-three".