6535216384 has 36 divisors (see below), whose sum is σ = 13055107716. Its totient is φ = 3265052672.

The previous prime is 6535216367. The next prime is 6535216397. The reversal of 6535216384 is 4836125356.

It can be written as a sum of positive squares in 2 ways, for example, as 5516329984 + 1018886400 = 74272^2 + 31920^2 .

It is a super-3 number, since 3×6535216384³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6535216384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342192 + ... + 360784.

It is an arithmetic number, because the mean of its divisors is an integer number (362641881).

Almost surely, 2^6535216384 is an apocalyptic number.

6535216384 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6535216384 is a deficient number, since it is larger than the sum of its proper divisors (6519891332).

6535216384 is a wasteful number, since it uses less digits than its factorization.

6535216384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19982 (or 19968 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 6535216384 is about 80840.6852024400. The cubic root of 6535216384 is about 1869.6199084504.

The spelling of 6535216384 in words is "six billion, five hundred thirty-five million, two hundred sixteen thousand, three hundred eighty-four".