16100666601165 has 12 divisors (see below), whose sum is σ = 27907822108764. Its totient is φ = 8587022187264.

The previous prime is 16100666601161. The next prime is 16100666601179. The reversal of 16100666601165 is 56110666600161.

It can be written as a sum of positive squares in 2 ways, for example, as 6522006807684 + 9578659793481 = 2553822^2 + 3094941^2 .

It is not a de Polignac number, because 16100666601165 - 2² = 16100666601161 is a prime.

It is a super-2 number, since 2×16100666601165² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 357792591137 = 16100666601165 / (1 + 6 + 1 + 0 + 0 + 6 + 6 + 6 + 6 + 0 + 1 + 1 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 16100666601165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16100666601161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178896295524 + ... + 178896295613.

It is an arithmetic number, because the mean of its divisors is an integer number (2325651842397).

Almost surely, 2^{16100666601165} is an apocalyptic number.

16100666601165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16100666601165 is a deficient number, since it is larger than the sum of its proper divisors (11807155507599).

16100666601165 is a wasteful number, since it uses less digits than its factorization.

16100666601165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357792591148 (or 357792591145 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 16100666601165 in words is "sixteen trillion, one hundred billion, six hundred sixty-six million, six hundred one thousand, one hundred sixty-five".