2052012665 has 4 divisors (see below), whose sum is σ = 2462415204. Its totient is φ = 1641610128.

The previous prime is 2052012661. The next prime is 2052012671. The reversal of 2052012665 is 5662102502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1136768656 + 915244009 = 33716^2 + 30253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2052012665 - 2² = 2052012661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2052012661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205201262 + ... + 205201271.

It is an arithmetic number, because the mean of its divisors is an integer number (615603801).

Almost surely, 2^2052012665 is an apocalyptic number.

It is an amenable number.

2052012665 is a deficient number, since it is larger than the sum of its proper divisors (410402539).

2052012665 is an equidigital number, since it uses as much as digits as its factorization.

2052012665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410402538.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2052012665 is about 45299.1464047613. The cubic root of 2052012665 is about 1270.7496896330.

The spelling of 2052012665 in words is "two billion, fifty-two million, twelve thousand, six hundred sixty-five".