161606061616007 has 16 divisors (see below), whose sum is σ = 166271086013760. Its totient is φ = 156975590553600.

The previous prime is 161606061615997. The next prime is 161606061616033. The reversal of 161606061616007 is 700616160606161.

It is a cyclic number.

It is not a de Polignac number, because 161606061616007 - 2⁸ = 161606061615751 is a prime.

It is a super-2 number, since 2×161606061616007² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606063616007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123624782 + ... + 124925172.

It is an arithmetic number, because the mean of its divisors is an integer number (10391942875860).

Almost surely, 2^{161606061616007} is an apocalyptic number.

161606061616007 is a deficient number, since it is larger than the sum of its proper divisors (4665024397753).

161606061616007 is a wasteful number, since it uses less digits than its factorization.

161606061616007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313674.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 161606061616007 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred sixteen thousand, seven".