16659129077 has 2 divisors, whose sum is σ = 16659129078. Its totient is φ = 16659129076.

The previous prime is 16659129043. The next prime is 16659129089. The reversal of 16659129077 is 77092195661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16027813201 + 631315876 = 126601^2 + 25126^2 .

It is a cyclic number.

It is not a de Polignac number, because 16659129077 - 2⁶ = 16659129013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16659129037) 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, 8329564538 + 8329564539.

It is an arithmetic number, because the mean of its divisors is an integer number (8329564539).

Almost surely, 2^16659129077 is an apocalyptic number.

It is an amenable number.

16659129077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16659129077 is an equidigital number, since it uses as much as digits as its factorization.

16659129077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 16659129077 in words is "sixteen billion, six hundred fifty-nine million, one hundred twenty-nine thousand, seventy-seven".