2665279165 has 8 divisors (see below), whose sum is σ = 3201419520. Its totient is φ = 2130166992.

The previous prime is 2665279163. The next prime is 2665279171. The reversal of 2665279165 is 5619725662.

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

It is a cyclic number.

It is not a de Polignac number, because 2665279165 - 2¹ = 2665279163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665279163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251329 + ... + 261718.

It is an arithmetic number, because the mean of its divisors is an integer number (400177440).

Almost surely, 2^2665279165 is an apocalyptic number.

It is an amenable number.

2665279165 is a deficient number, since it is larger than the sum of its proper divisors (536140355).

2665279165 is a wasteful number, since it uses less digits than its factorization.

2665279165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514091.

The product of its digits is 1360800, while the sum is 49.

The square root of 2665279165 is about 51626.3417743307. The cubic root of 2665279165 is about 1386.4819969948.

The spelling of 2665279165 in words is "two billion, six hundred sixty-five million, two hundred seventy-nine thousand, one hundred sixty-five".