161166560505567 has 8 divisors (see below), whose sum is σ = 214891412817840. Its totient is φ = 107443040931840.

The previous prime is 161166560505523. The next prime is 161166560505571. The reversal of 161166560505567 is 765505065661161.

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

It is not a de Polignac number, because 161166560505567 - 2⁷ = 161166560505439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161166560505567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161166560505667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332902434 + ... + 333386207.

It is an arithmetic number, because the mean of its divisors is an integer number (26861426602230).

Almost surely, 2^{161166560505567} is an apocalyptic number.

161166560505567 is a deficient number, since it is larger than the sum of its proper divisors (53724852312273).

161166560505567 is an equidigital number, since it uses as much as digits as its factorization.

161166560505567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666369273.

The product of its (nonzero) digits is 34020000, while the sum is 60.

The spelling of 161166560505567 in words is "one hundred sixty-one trillion, one hundred sixty-six billion, five hundred sixty million, five hundred five thousand, five hundred sixty-seven".