16550536517 has 2 divisors, whose sum is σ = 16550536518. Its totient is φ = 16550536516.

The previous prime is 16550536481. The next prime is 16550536693. The reversal of 16550536517 is 71563505561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16350992641 + 199543876 = 127871^2 + 14126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16550536517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550536117) 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, 8275268258 + 8275268259.

It is an arithmetic number, because the mean of its divisors is an integer number (8275268259).

Almost surely, 2^16550536517 is an apocalyptic number.

It is an amenable number.

16550536517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550536517 is an equidigital number, since it uses as much as digits as its factorization.

16550536517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472500, while the sum is 44.

The spelling of 16550536517 in words is "sixteen billion, five hundred fifty million, five hundred thirty-six thousand, five hundred seventeen".