18705197330352 has 180 divisors, whose sum is σ = 56723784933504. Its totient is φ = 5751521717760.

The previous prime is 18705197330317. The next prime is 18705197330357. The reversal of 18705197330352 is 25303379150781.

It is a happy number.

18705197330352 is a `hidden beast` number, since 1 + 8 + 7 + 0 + 519 + 73 + 3 + 0 + 3 + 52 = 666.

It is not an unprimeable number, because it can be changed into a prime (18705197330357) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35536998 + ... + 36059514.

Almost surely, 2^{18705197330352} is an apocalyptic number.

18705197330352 is a gapful number since it is divisible by the number (12) 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 18705197330352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28361892466752).

18705197330352 is an abundant number, since it is smaller than the sum of its proper divisors (38018587603152).

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

18705197330352 is a wasteful number, since it uses less digits than its factorization.

18705197330352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524028 (or 524006 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 18705197330352 in words is "eighteen trillion, seven hundred five billion, one hundred ninety-seven million, three hundred thirty thousand, three hundred fifty-two".