2665516085 has 8 divisors (see below), whose sum is σ = 3251056056. Its totient is φ = 2097455040.

The previous prime is 2665516079. The next prime is 2665516103. The reversal of 2665516085 is 5806155662.

It can be written as a sum of positive squares in 4 ways, for example, as 204661636 + 2460854449 = 14306^2 + 49607^2 .

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

It is not a de Polignac number, because 2665516085 - 2¹⁴ = 2665499701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 4369394 + ... + 4370003.

It is an arithmetic number, because the mean of its divisors is an integer number (406382007).

Almost surely, 2^2665516085 is an apocalyptic number.

It is an amenable number.

2665516085 is a deficient number, since it is larger than the sum of its proper divisors (585539971).

2665516085 is an equidigital number, since it uses as much as digits as its factorization.

2665516085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8739463.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 2665516085 is about 51628.6362884010. The cubic root of 2665516085 is about 1386.5230778174.

The spelling of 2665516085 in words is "two billion, six hundred sixty-five million, five hundred sixteen thousand, eighty-five".