165616116105 has 16 divisors (see below), whose sum is σ = 289075402944. Its totient is φ = 80298722880.

The previous prime is 165616116101. The next prime is 165616116137. The reversal of 165616116105 is 501611616561.

It is not a de Polignac number, because 165616116105 - 2² = 165616116101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165616116101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501866854 + ... + 501867183.

It is an arithmetic number, because the mean of its divisors is an integer number (18067212684).

Almost surely, 2^165616116105 is an apocalyptic number.

165616116105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165616116105 is a deficient number, since it is larger than the sum of its proper divisors (123459286839).

165616116105 is a wasteful number, since it uses less digits than its factorization.

165616116105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003734056.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 165616116105 in words is "one hundred sixty-five billion, six hundred sixteen million, one hundred sixteen thousand, one hundred five".