6535749968 has 20 divisors (see below), whose sum is σ = 13814199168. Its totient is φ = 2970795360.

The previous prime is 6535749959. The next prime is 6535750003. The reversal of 6535749968 is 8699475356.

It is a self number, because there is not a number n which added to its sum of digits gives 6535749968.

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, 18567296 + ... + 18567647.

Almost surely, 2^6535749968 is an apocalyptic number.

It is an amenable number.

6535749968 is an abundant number, since it is smaller than the sum of its proper divisors (7278449200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6535749968 is a wasteful number, since it uses less digits than its factorization.

6535749968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37134962 (or 37134956 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 62.

The square root of 6535749968 is about 80843.9853545086. The cubic root of 6535749968 is about 1869.6707903218.

The spelling of 6535749968 in words is "six billion, five hundred thirty-five million, seven hundred forty-nine thousand, nine hundred sixty-eight".