7539535668 has 192 divisors, whose sum is σ = 21232189440. Its totient is φ = 2037312000.

The previous prime is 7539535613. The next prime is 7539535687. The reversal of 7539535668 is 8665359357.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28667305 + ... + 28667567.

It is an arithmetic number, because the mean of its divisors is an integer number (110584320).

Almost surely, 2^7539535668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7539535668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10616094720).

7539535668 is an abundant number, since it is smaller than the sum of its proper divisors (13692653772).

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

7539535668 is a wasteful number, since it uses less digits than its factorization.

7539535668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 516 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 57.

The square root of 7539535668 is about 86830.4996415430. The cubic root of 7539535668 is about 1960.8672813886.

The spelling of 7539535668 in words is "seven billion, five hundred thirty-nine million, five hundred thirty-five thousand, six hundred sixty-eight".