161071162165585 has 32 divisors (see below), whose sum is σ = 226087531084800. Its totient is φ = 107855027921088.

The previous prime is 161071162165583. The next prime is 161071162165643. The reversal of 161071162165585 is 585561261170161.

161071162165585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161071162165585 - 2¹ = 161071162165583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161071162165583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6048135 + ... + 18939964.

It is an arithmetic number, because the mean of its divisors is an integer number (7065235346400).

Almost surely, 2^{161071162165585} is an apocalyptic number.

It is an amenable number.

161071162165585 is a deficient number, since it is larger than the sum of its proper divisors (65016368919215).

161071162165585 is a wasteful number, since it uses less digits than its factorization.

161071162165585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24992437.

The product of its (nonzero) digits is 3024000, while the sum is 55.

The spelling of 161071162165585 in words is "one hundred sixty-one trillion, seventy-one billion, one hundred sixty-two million, one hundred sixty-five thousand, five hundred eighty-five".