1108664112665 has 8 divisors (see below), whose sum is σ = 1355498764488. Its totient is φ = 870196737280.

The previous prime is 1108664112643. The next prime is 1108664112683. The reversal of 1108664112665 is 5662114668011.

It can be written as a sum of positive squares in 4 ways, for example, as 601077685264 + 507586427401 = 775292^2 + 712451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1108664112665 - 2²⁸ = 1108395677209 is a prime.

It is a super-2 number, since 2×1108664112665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2091818816 + ... + 2091819345.

It is an arithmetic number, because the mean of its divisors is an integer number (169437345561).

Almost surely, 2^{1108664112665} is an apocalyptic number.

It is an amenable number.

1108664112665 is a deficient number, since it is larger than the sum of its proper divisors (246834651823).

1108664112665 is an equidigital number, since it uses as much as digits as its factorization.

1108664112665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183638219.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 1108664112665 in words is "one trillion, one hundred eight billion, six hundred sixty-four million, one hundred twelve thousand, six hundred sixty-five".