18843645358080 has 1664 divisors, whose sum is σ = 74401225113600. Its totient is φ = 4505252659200.

The previous prime is 18843645358001. The next prime is 18843645358103. The reversal of 18843645358080 is 8085354634881.

18843645358080 is a `hidden beast` number, since 1 + 8 + 8 + 4 + 3 + 6 + 45 + 3 + 580 + 8 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18843645357999 and 18843645358017.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15307591065 + ... + 15307592295.

Almost surely, 2^{18843645358080} is an apocalyptic number.

18843645358080 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 18843645358080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37200612556800).

18843645358080 is an abundant number, since it is smaller than the sum of its proper divisors (55557579755520).

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

18843645358080 is a wasteful number, since it uses less digits than its factorization.

18843645358080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 63.

The spelling of 18843645358080 in words is "eighteen trillion, eight hundred forty-three billion, six hundred forty-five million, three hundred fifty-eight thousand, eighty".