2065312065 has 128 divisors (see below), whose sum is σ = 3888622080. Its totient is φ = 928972800.

The previous prime is 2065312049. The next prime is 2065312079. The reversal of 2065312065 is 5602135602.

It is not a de Polignac number, because 2065312065 - 2⁴ = 2065312049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7349725 + ... + 7350005.

It is an arithmetic number, because the mean of its divisors is an integer number (30379860).

Almost surely, 2^2065312065 is an apocalyptic number.

It is an amenable number.

2065312065 is a deficient number, since it is larger than the sum of its proper divisors (1823310015).

2065312065 is a wasteful number, since it uses less digits than its factorization.

2065312065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2065312065 is about 45445.7045825015. The cubic root of 2065312065 is about 1273.4890860451.

Adding to 2065312065 its reverse (5602135602), we get a palindrome (7667447667).

The spelling of 2065312065 in words is "two billion, sixty-five million, three hundred twelve thousand, sixty-five".