161606601060111 has 8 divisors (see below), whose sum is σ = 239417186755760. Its totient is φ = 107737734040056.

The previous prime is 161606601060103. The next prime is 161606601060133. The reversal of 161606601060111 is 111060106606161.

161606601060111 is a `hidden beast` number, since 16 + 16 + 0 + 6 + 6 + 0 + 10 + 601 + 11 = 666.

It is not a de Polignac number, because 161606601060111 - 2³ = 161606601060103 is a prime.

It is a super-2 number, since 2×161606601060111² (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 (161606601560111) 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, 2992714834420 + ... + 2992714834473.

It is an arithmetic number, because the mean of its divisors is an integer number (29927148344470).

Almost surely, 2^{161606601060111} is an apocalyptic number.

161606601060111 is a deficient number, since it is larger than the sum of its proper divisors (77810585695649).

161606601060111 is an equidigital number, since it uses as much as digits as its factorization.

161606601060111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985429668902 (or 5985429668896 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

Adding to 161606601060111 its reverse (111060106606161), we get a palindrome (272666707666272).

The spelling of 161606601060111 in words is "one hundred sixty-one trillion, six hundred six billion, six hundred one million, sixty thousand, one hundred eleven".