1608088181665 has 32 divisors (see below), whose sum is σ = 2231333003520. Its totient is φ = 1089751968000.

The previous prime is 1608088181663. The next prime is 1608088181681. The reversal of 1608088181665 is 5661818808061.

It is a happy number.

It is not a de Polignac number, because 1608088181665 - 2¹ = 1608088181663 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1608088181663) 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, 1492006 + ... + 2332864.

It is an arithmetic number, because the mean of its divisors is an integer number (69729156360).

Almost surely, 2^{1608088181665} is an apocalyptic number.

It is an amenable number.

1608088181665 is a deficient number, since it is larger than the sum of its proper divisors (623244821855).

1608088181665 is a wasteful number, since it uses less digits than its factorization.

1608088181665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841513.

The product of its (nonzero) digits is 4423680, while the sum is 58.

The spelling of 1608088181665 in words is "one trillion, six hundred eight billion, eighty-eight million, one hundred eighty-one thousand, six hundred sixty-five".