160809015331666 has 8 divisors (see below), whose sum is σ = 259768409381964. Its totient is φ = 74219545537680.

The previous prime is 160809015331661. The next prime is 160809015331703. The reversal of 160809015331666 is 666133510908061.

It can be written as a sum of positive squares in 2 ways, for example, as 140968485190225 + 19840530141441 = 11873015^2 + 4454271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (160809015331661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3092481064045 + ... + 3092481064096.

Almost surely, 2^{160809015331666} is an apocalyptic number.

160809015331666 is a deficient number, since it is larger than the sum of its proper divisors (98959394050298).

160809015331666 is a wasteful number, since it uses less digits than its factorization.

160809015331666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184962128156.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 160809015331666 in words is "one hundred sixty trillion, eight hundred nine billion, fifteen million, three hundred thirty-one thousand, six hundred sixty-six".