18554407680 has 288 divisors, whose sum is σ = 61975388160. Its totient is φ = 4725227520.

The previous prime is 18554407661. The next prime is 18554407691. The reversal of 18554407680 is 8670445581.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 9403174 + ... + 9405146.

It is an arithmetic number, because the mean of its divisors is an integer number (215192320).

Almost surely, 2^18554407680 is an apocalyptic number.

18554407680 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 18554407680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30987694080).

18554407680 is an abundant number, since it is smaller than the sum of its proper divisors (43420980480).

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

18554407680 is a wasteful number, since it uses less digits than its factorization.

18554407680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 18554407680 in words is "eighteen billion, five hundred fifty-four million, four hundred seven thousand, six hundred eighty".