161606061615593 has 16 divisors (see below), whose sum is σ = 184909957676160. Its totient is φ = 138356563142016.

The previous prime is 161606061615589. The next prime is 161606061615611. The reversal of 161606061615593 is 395516160606161.

It is a cyclic number.

It is not a de Polignac number, because 161606061615593 - 2² = 161606061615589 is a prime.

It is a super-2 number, since 2×161606061615593² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161606061618593) 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, 25423421 + ... + 31137797.

It is an arithmetic number, because the mean of its divisors is an integer number (11556872354760).

Almost surely, 2^{161606061615593} is an apocalyptic number.

It is an amenable number.

161606061615593 is a deficient number, since it is larger than the sum of its proper divisors (23303896060567).

161606061615593 is a wasteful number, since it uses less digits than its factorization.

161606061615593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719136.

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 161606061615593 in words is "one hundred sixty-one trillion, six hundred six billion, sixty-one million, six hundred fifteen thousand, five hundred ninety-three".