169808728227 has 16 divisors (see below), whose sum is σ = 227730522240. Its totient is φ = 112546677312.

The previous prime is 169808728217. The next prime is 169808728283. The reversal of 169808728227 is 722827808961.

It is not a de Polignac number, because 169808728227 - 2¹¹ = 169808726179 is a prime.

It is a super-2 number, since 2×169808728227² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169808728217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2372103 + ... + 2442639.

It is an arithmetic number, because the mean of its divisors is an integer number (14233157640).

Almost surely, 2^169808728227 is an apocalyptic number.

169808728227 is a deficient number, since it is larger than the sum of its proper divisors (57921794013).

169808728227 is a wasteful number, since it uses less digits than its factorization.

169808728227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75202.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 169808728227 in words is "one hundred sixty-nine billion, eight hundred eight million, seven hundred twenty-eight thousand, two hundred twenty-seven".