18508525056 has 320 divisors, whose sum is σ = 66302184960. Its totient is φ = 4976640000.

The previous prime is 18508525001. The next prime is 18508525067. The reversal of 18508525056 is 65052580581.

18508525056 is a `hidden beast` number, since 18 + 50 + 85 + 2 + 505 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1639431 + ... + 1650681.

It is an arithmetic number, because the mean of its divisors is an integer number (207194328).

Almost surely, 2^18508525056 is an apocalyptic number.

18508525056 is a gapful number since it is divisible by the number (16) 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 18508525056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33151092480).

18508525056 is an abundant number, since it is smaller than the sum of its proper divisors (47793659904).

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

18508525056 is a wasteful number, since it uses less digits than its factorization.

18508525056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11302 (or 11280 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 45.

The spelling of 18508525056 in words is "eighteen billion, five hundred eight million, five hundred twenty-five thousand, fifty-six".