1165110101005 has 4 divisors (see below), whose sum is σ = 1398132121212. Its totient is φ = 932088080800.

The previous prime is 1165110101003. The next prime is 1165110101021. The reversal of 1165110101005 is 5001010115611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 413235551556 + 751874549449 = 642834^2 + 867107^2 .

It is not a de Polignac number, because 1165110101005 - 2¹ = 1165110101003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165110101003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116511010096 + ... + 116511010105.

It is an arithmetic number, because the mean of its divisors is an integer number (349533030303).

Almost surely, 2^{1165110101005} is an apocalyptic number.

It is an amenable number.

1165110101005 is a deficient number, since it is larger than the sum of its proper divisors (233022020207).

1165110101005 is an equidigital number, since it uses as much as digits as its factorization.

1165110101005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233022020206.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 1165110101005 its reverse (5001010115611), we get a palindrome (6166120216616).

The spelling of 1165110101005 in words is "one trillion, one hundred sixty-five billion, one hundred ten million, one hundred one thousand, five".