161317670042073 has 8 divisors (see below), whose sum is σ = 219666614525568. Its totient is φ = 105256919459984.

The previous prime is 161317670042047. The next prime is 161317670042209. The reversal of 161317670042073 is 370240076713161.

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

It is a cyclic number.

It is not a de Polignac number, because 161317670042073 - 2¹² = 161317670037977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161317670043073) 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, 572048475186 + ... + 572048475467.

It is an arithmetic number, because the mean of its divisors is an integer number (27458326815696).

Almost surely, 2^{161317670042073} is an apocalyptic number.

It is an amenable number.

161317670042073 is a deficient number, since it is larger than the sum of its proper divisors (58348944483495).

161317670042073 is a wasteful number, since it uses less digits than its factorization.

161317670042073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144096950703.

The product of its (nonzero) digits is 889056, while the sum is 48.

The spelling of 161317670042073 in words is "one hundred sixty-one trillion, three hundred seventeen billion, six hundred seventy million, forty-two thousand, seventy-three".