6535385633 has 18 divisors (see below), whose sum is σ = 8052461478. Its totient is φ = 5270361600.

The previous prime is 6535385627. The next prime is 6535385641. The reversal of 6535385633 is 3365835356.

It can be written as a sum of positive squares in 3 ways, for example, as 1789966864 + 4745418769 = 42308^2 + 68887^2 .

It is not a de Polignac number, because 6535385633 - 2⁴ = 6535385617 is a prime.

It is a super-2 number, since 2×6535385633² = 85422530744045621378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6535385603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2331833 + ... + 2334633.

It is an arithmetic number, because the mean of its divisors is an integer number (447358971).

Almost surely, 2^6535385633 is an apocalyptic number.

It is an amenable number.

6535385633 is a deficient number, since it is larger than the sum of its proper divisors (1517075845).

6535385633 is an frugal number, since it uses more digits than its factorization.

6535385633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633 (or 2825 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 47.

The square root of 6535385633 is about 80841.7320014855. The cubic root of 6535385633 is about 1869.6360481133.

The spelling of 6535385633 in words is "six billion, five hundred thirty-five million, three hundred eighty-five thousand, six hundred thirty-three".