18488807680 has 72 divisors (see below), whose sum is σ = 50613135552. Its totient is φ = 6339016704.

The previous prime is 18488807647. The next prime is 18488807693. The reversal of 18488807680 is 8670888481.

It is a super-3 number, since 3×18488807680³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022782 + ... + 1040701.

It is an arithmetic number, because the mean of its divisors is an integer number (702960216).

Almost surely, 2^18488807680 is an apocalyptic number.

18488807680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18488807680 is an abundant number, since it is smaller than the sum of its proper divisors (32124327872).

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

18488807680 is an equidigital number, since it uses as much as digits as its factorization.

18488807680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063511 (or 2063497 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 58.

The spelling of 18488807680 in words is "eighteen billion, four hundred eighty-eight million, eight hundred seven thousand, six hundred eighty".