18425428800 has 672 divisors, whose sum is σ = 66616307712. Its totient is φ = 4445675520.

The previous prime is 18425428787. The next prime is 18425428829. The reversal of 18425428800 is 882452481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 275006367 + ... + 275006433.

Almost surely, 2^18425428800 is an apocalyptic number.

18425428800 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 18425428800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33308153856).

18425428800 is an abundant number, since it is smaller than the sum of its proper divisors (48190878912).

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

18425428800 is a wasteful number, since it uses less digits than its factorization.

18425428800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 42.

The spelling of 18425428800 in words is "eighteen billion, four hundred twenty-five million, four hundred twenty-eight thousand, eight hundred".