133568068536 has 384 divisors, whose sum is σ = 471523852800. Its totient is φ = 33234001920.

The previous prime is 133568068531. The next prime is 133568068547. The reversal of 133568068536 is 635860865331.

133568068536 is a `hidden beast` number, since 13 + 3 + 568 + 0 + 68 + 5 + 3 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133568068531) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6990516 + ... + 7009596.

It is an arithmetic number, because the mean of its divisors is an integer number (1227926700).

Almost surely, 2^133568068536 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 133568068536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235761926400).

133568068536 is an abundant number, since it is smaller than the sum of its proper divisors (337955784264).

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

133568068536 is a wasteful number, since it uses less digits than its factorization.

133568068536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19179 (or 19172 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 133568068536 in words is "one hundred thirty-three billion, five hundred sixty-eight million, sixty-eight thousand, five hundred thirty-six".