16555266736205 has 16 divisors (see below), whose sum is σ = 19879448996784. Its totient is φ = 13235463037440.

The previous prime is 16555266736193. The next prime is 16555266736213. The reversal of 16555266736205 is 50263766255561.

It can be written as a sum of positive squares in 8 ways, for example, as 1459698436 + 16553807037769 = 38206^2 + 4068637^2 .

It is not a de Polignac number, because 16555266736205 - 2⁴ = 16555266736189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 60231347 + ... + 60505583.

It is an arithmetic number, because the mean of its divisors is an integer number (1242465562299).

Almost surely, 2^{16555266736205} is an apocalyptic number.

It is an amenable number.

16555266736205 is a deficient number, since it is larger than the sum of its proper divisors (3324182260579).

16555266736205 is a wasteful number, since it uses less digits than its factorization.

16555266736205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282176.

The product of its (nonzero) digits is 68040000, while the sum is 59.

The spelling of 16555266736205 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, seven hundred thirty-six thousand, two hundred five".