189568643935680 has 168 divisors, whose sum is σ = 652164724219632. Its totient is φ = 50541747572736.

The previous prime is 189568643935663. The next prime is 189568643935687. The reversal of 189568643935680 is 86539346865981.

189568643935680 is a `hidden beast` number, since 1 + 8 + 9 + 5 + 6 + 8 + 6 + 43 + 9 + 3 + 568 + 0 = 666.

189568643935680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189568643935680² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189568643935680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189568643935687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8288667 + ... + 21162213.

Almost surely, 2^{189568643935680} is an apocalyptic number.

189568643935680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189568643935680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326082362109816).

189568643935680 is an abundant number, since it is smaller than the sum of its proper divisors (462596080283952).

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

189568643935680 is a wasteful number, since it uses less digits than its factorization.

189568643935680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12878683 (or 12878670 counting only the distinct ones).

The product of its (nonzero) digits is 8062156800, while the sum is 81.

The spelling of 189568643935680 in words is "one hundred eighty-nine trillion, five hundred sixty-eight billion, six hundred forty-three million, nine hundred thirty-five thousand, six hundred eighty".