18852565680 has 480 divisors, whose sum is σ = 72067387392. Its totient is φ = 4383590400.

The previous prime is 18852565679. The next prime is 18852565741. The reversal of 18852565680 is 8656525881.

18852565680 is a `hidden beast` number, since 18 + 8 + 5 + 2 + 565 + 68 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12476125 + ... + 12477635.

Almost surely, 2^18852565680 is an apocalyptic number.

18852565680 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 18852565680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36033693696).

18852565680 is an abundant number, since it is smaller than the sum of its proper divisors (53214821712).

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

18852565680 is a wasteful number, since it uses less digits than its factorization.

18852565680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 18852565680 in words is "eighteen billion, eight hundred fifty-two million, five hundred sixty-five thousand, six hundred eighty".