652442309569 has 4 divisors (see below), whose sum is σ = 659168519044. Its totient is φ = 645716100096.

The previous prime is 652442309567. The next prime is 652442309609. The reversal of 652442309569 is 965903244256.

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 125112178944 + 527330130625 = 353712^2 + 726175^2 .

It is a cyclic number.

It is not a de Polignac number, because 652442309569 - 2¹ = 652442309567 is a prime.

It is a super-2 number, since 2×652442309569² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652442309567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363104592 + ... + 3363104785.

It is an arithmetic number, because the mean of its divisors is an integer number (164792129761).

Almost surely, 2^652442309569 is an apocalyptic number.

It is an amenable number.

652442309569 is a deficient number, since it is larger than the sum of its proper divisors (6726209475).

652442309569 is an equidigital number, since it uses as much as digits as its factorization.

652442309569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6726209474.

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 652442309569 in words is "six hundred fifty-two billion, four hundred forty-two million, three hundred nine thousand, five hundred sixty-nine".