6535601856 has 448 divisors, whose sum is σ = 23906073600. Its totient is φ = 1707982848.

The previous prime is 6535601801. The next prime is 6535601857. The reversal of 6535601856 is 6581065356.

6535601856 is a `hidden beast` number, since 6 + 5 + 3 + 560 + 1 + 85 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is not an unprimeable number, because it can be changed into a prime (6535601857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7607955 + ... + 7608813.

Almost surely, 2^6535601856 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 6535601856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11953036800).

6535601856 is an abundant number, since it is smaller than the sum of its proper divisors (17370471744).

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

6535601856 is a wasteful number, since it uses less digits than its factorization.

6535601856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 6535601856 is about 80843.0693133308. The cubic root of 6535601856 is about 1869.6566668332.

The spelling of 6535601856 in words is "six billion, five hundred thirty-five million, six hundred one thousand, eight hundred fifty-six".