2115217065 has 32 divisors (see below), whose sum is σ = 3646903680. Its totient is φ = 1040702976.

The previous prime is 2115217037. The next prime is 2115217207. The reversal of 2115217065 is 5607125112.

It is not a de Polignac number, because 2115217065 - 2²² = 2111022761 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586909 + ... + 590501.

It is an arithmetic number, because the mean of its divisors is an integer number (113965740).

Almost surely, 2^2115217065 is an apocalyptic number.

It is an amenable number.

2115217065 is a deficient number, since it is larger than the sum of its proper divisors (1531686615).

2115217065 is a wasteful number, since it uses less digits than its factorization.

2115217065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 2115217065 is about 45991.4890496057. The cubic root of 2115217065 is about 1283.6648438372.

The spelling of 2115217065 in words is "two billion, one hundred fifteen million, two hundred seventeen thousand, sixty-five".