165110161660101 has 48 divisors (see below), whose sum is σ = 283787904411648. Its totient is φ = 90538501766400.

The previous prime is 165110161660097. The next prime is 165110161660109. The reversal of 165110161660101 is 101066161011561.

It is a happy number.

165110161660101 is a `hidden beast` number, since 16 + 5 + 1 + 10 + 1 + 616 + 6 + 0 + 10 + 1 = 666.

It is not a de Polignac number, because 165110161660101 - 2² = 165110161660097 is a prime.

It is a super-2 number, since 2×165110161660101² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165110161660109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 523792101 + ... + 524107226.

It is an arithmetic number, because the mean of its divisors is an integer number (5912248008576).

Almost surely, 2^{165110161660101} is an apocalyptic number.

It is an amenable number.

165110161660101 is a deficient number, since it is larger than the sum of its proper divisors (118677742751547).

165110161660101 is a wasteful number, since it uses less digits than its factorization.

165110161660101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047899442 (or 1047899439 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The spelling of 165110161660101 in words is "one hundred sixty-five trillion, one hundred ten billion, one hundred sixty-one million, six hundred sixty thousand, one hundred one".