2115264065 has 8 divisors (see below), whose sum is σ = 2538625320. Its totient is φ = 1692005632.

The previous prime is 2115264043. The next prime is 2115264101. The reversal of 2115264065 is 5604625112.

It is a Cunningham number, because it is equal to 45992²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 761539216 + 1353724849 = 27596^2 + 36793^2 .

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 2115264065 - 2⁶ = 2115264001 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, 30887 + ... + 72003.

It is an arithmetic number, because the mean of its divisors is an integer number (317328165).

Almost surely, 2^2115264065 is an apocalyptic number.

It is an amenable number.

2115264065 is a deficient number, since it is larger than the sum of its proper divisors (423361255).

2115264065 is a wasteful number, since it uses less digits than its factorization.

2115264065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51411.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2115264065 is about 45992.0000108715. Note that the first 4 decimals coincide. The cubic root of 2115264065 is about 1283.6743514195.

Adding to 2115264065 its reverse (5604625112), we get a palindrome (7719889177).

The spelling of 2115264065 in words is "two billion, one hundred fifteen million, two hundred sixty-four thousand, sixty-five".