161606601060135 has 32 divisors (see below), whose sum is σ = 322373687311872. Its totient is φ = 67161184855680.

The previous prime is 161606601060133. The next prime is 161606601060277. The reversal of 161606601060135 is 531060106606161.

It is not a de Polignac number, because 161606601060135 - 2¹ = 161606601060133 is a prime.

It is a super-2 number, since 2×161606601060135² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606601060133) 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, 69959566404 + ... + 69959568713.

It is an arithmetic number, because the mean of its divisors is an integer number (10074177728496).

Almost surely, 2^{161606601060135} is an apocalyptic number.

161606601060135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161606601060135 is a deficient number, since it is larger than the sum of its proper divisors (160767086251737).

161606601060135 is a wasteful number, since it uses less digits than its factorization.

161606601060135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139919135143.

The product of its (nonzero) digits is 116640, while the sum is 42.

Adding to 161606601060135 its reverse (531060106606161), we get a palindrome (692666707666296).

The spelling of 161606601060135 in words is "one hundred sixty-one trillion, six hundred six billion, six hundred one million, sixty thousand, one hundred thirty-five".