16550525609797 has 2 divisors, whose sum is σ = 16550525609798. Its totient is φ = 16550525609796.

The previous prime is 16550525609749. The next prime is 16550525609819. The reversal of 16550525609797 is 79790652505561.

16550525609797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13443082923361 + 3107442686436 = 3666481^2 + 1762794^2 .

It is a cyclic number.

It is not a de Polignac number, because 16550525609797 - 2⁴³ = 7754432587589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550525603797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275262804898 + 8275262804899.

It is an arithmetic number, because the mean of its divisors is an integer number (8275262804899).

Almost surely, 2^{16550525609797} is an apocalyptic number.

It is an amenable number.

16550525609797 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550525609797 is an equidigital number, since it uses as much as digits as its factorization.

16550525609797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605000, while the sum is 67.

The spelling of 16550525609797 in words is "sixteen trillion, five hundred fifty billion, five hundred twenty-five million, six hundred nine thousand, seven hundred ninety-seven".