160749817209 has 24 divisors (see below), whose sum is σ = 237963339432. Its totient is φ = 104506183680.

The previous prime is 160749817199. The next prime is 160749817223. The reversal of 160749817209 is 902718947061.

160749817209 is a `hidden beast` number, since 1 + 607 + 4 + 9 + 8 + 1 + 7 + 20 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33730995600 + 127018821609 = 183660^2 + 356397^2 .

It is not a de Polignac number, because 160749817209 - 2²¹ = 160747720057 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (160749817229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 742909 + ... + 934565.

It is an arithmetic number, because the mean of its divisors is an integer number (9915139143).

Almost surely, 2^160749817209 is an apocalyptic number.

It is an amenable number.

160749817209 is a deficient number, since it is larger than the sum of its proper divisors (77213522223).

160749817209 is a wasteful number, since it uses less digits than its factorization.

160749817209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193977 (or 193974 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 160749817209 in words is "one hundred sixty billion, seven hundred forty-nine million, eight hundred seventeen thousand, two hundred nine".