165663123533134 has 16 divisors (see below), whose sum is σ = 249053651408016. Its totient is φ = 82645433920000.

The previous prime is 165663123533087. The next prime is 165663123533221. The reversal of 165663123533134 is 431335321366561.

It is a happy number.

It is a super-2 number, since 2×165663123533134² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46840192 + ... + 50252659.

It is an arithmetic number, because the mean of its divisors is an integer number (15565853213001).

Almost surely, 2^{165663123533134} is an apocalyptic number.

165663123533134 is a deficient number, since it is larger than the sum of its proper divisors (83390527874882).

165663123533134 is a wasteful number, since it uses less digits than its factorization.

165663123533134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97094771.

The product of its digits is 10497600, while the sum is 52.

Adding to 165663123533134 its reverse (431335321366561), we get a palindrome (596998444899695).

The spelling of 165663123533134 in words is "one hundred sixty-five trillion, six hundred sixty-three billion, one hundred twenty-three million, five hundred thirty-three thousand, one hundred thirty-four".