18516885480 has 192 divisors, whose sum is σ = 63433656000. Its totient is φ = 4671571968.

The previous prime is 18516885479. The next prime is 18516885509. The reversal of 18516885480 is 8458861581.

18516885480 is a `hidden beast` number, since 1 + 8 + 5 + 16 + 88 + 548 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6900219 + ... + 6902901.

It is an arithmetic number, because the mean of its divisors is an integer number (330383625).

Almost surely, 2^18516885480 is an apocalyptic number.

18516885480 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 18516885480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31716828000).

18516885480 is an abundant number, since it is smaller than the sum of its proper divisors (44916770520).

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

18516885480 is a wasteful number, since it uses less digits than its factorization.

18516885480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 54.

The spelling of 18516885480 in words is "eighteen billion, five hundred sixteen million, eight hundred eighty-five thousand, four hundred eighty".