535448567809 has 4 divisors (see below), whose sum is σ = 566945542404. Its totient is φ = 503951593216.

The previous prime is 535448567807. The next prime is 535448567839. The reversal of 535448567809 is 908765844535.

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 295908800625 + 239539767184 = 543975^2 + 489428^2 .

It is a cyclic number.

It is not a de Polignac number, because 535448567809 - 2¹ = 535448567807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (535448567807) 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, 15748487272 + ... + 15748487305.

It is an arithmetic number, because the mean of its divisors is an integer number (141736385601).

Almost surely, 2^535448567809 is an apocalyptic number.

It is an amenable number.

535448567809 is a deficient number, since it is larger than the sum of its proper divisors (31496974595).

535448567809 is a wasteful number, since it uses less digits than its factorization.

535448567809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31496974594.

The product of its (nonzero) digits is 145152000, while the sum is 64.

The spelling of 535448567809 in words is "five hundred thirty-five billion, four hundred forty-eight million, five hundred sixty-seven thousand, eight hundred nine".