18724847680 has 224 divisors, whose sum is σ = 55737434880. Its totient is φ = 5820948480.

The previous prime is 18724847671. The next prime is 18724847707. The reversal of 18724847680 is 8674842781.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 12541014 + ... + 12542506.

Almost surely, 2^18724847680 is an apocalyptic number.

18724847680 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 18724847680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27868717440).

18724847680 is an abundant number, since it is smaller than the sum of its proper divisors (37012587200).

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

18724847680 is a wasteful number, since it uses less digits than its factorization.

18724847680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 18724847680 in words is "eighteen billion, seven hundred twenty-four million, eight hundred forty-seven thousand, six hundred eighty".