5145005665 has 8 divisors (see below), whose sum is σ = 6184017000. Its totient is φ = 4109331072.

The previous prime is 5145005653. The next prime is 5145005707. The reversal of 5145005665 is 5665005415.

It can be written as a sum of positive squares in 4 ways, for example, as 147646801 + 4997358864 = 12151^2 + 70692^2 .

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 5145005665 - 2²⁹ = 4608134753 is a prime.

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, 830790 + ... + 836959.

It is an arithmetic number, because the mean of its divisors is an integer number (773002125).

Almost surely, 2^5145005665 is an apocalyptic number.

It is an amenable number.

5145005665 is a deficient number, since it is larger than the sum of its proper divisors (1039011335).

5145005665 is a wasteful number, since it uses less digits than its factorization.

5145005665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668371.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 5145005665 is about 71728.6948508057. The cubic root of 5145005665 is about 1726.3490856407.

The spelling of 5145005665 in words is "five billion, one hundred forty-five million, five thousand, six hundred sixty-five".