2152226665 has 8 divisors (see below), whose sum is σ = 2582993160. Its totient is φ = 1721567232.

The previous prime is 2152226663. The next prime is 2152226683. The reversal of 2152226665 is 5666222512.

2152226665 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101223721 + 2051002944 = 10061^2 + 45288^2 .

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 2152226665 - 2¹ = 2152226663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152226663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27451 + ... + 71119.

It is an arithmetic number, because the mean of its divisors is an integer number (322874145).

Almost surely, 2^2152226665 is an apocalyptic number.

It is an amenable number.

2152226665 is a deficient number, since it is larger than the sum of its proper divisors (430766495).

2152226665 is an equidigital number, since it uses as much as digits as its factorization.

2152226665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53531.

The product of its digits is 86400, while the sum is 37.

The square root of 2152226665 is about 46392.0970101590. The cubic root of 2152226665 is about 1291.1082887851.

The spelling of 2152226665 in words is "two billion, one hundred fifty-two million, two hundred twenty-six thousand, six hundred sixty-five".