4230781009920 has 952 divisors, whose sum is σ = 15472145124000. Its totient is φ = 1109926084608.

The previous prime is 4230781009919. The next prime is 4230781009933. The reversal of 4230781009920 is 299001870324.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 21260205981 + ... + 21260206179.

Almost surely, 2^{4230781009920} is an apocalyptic number.

4230781009920 is a gapful number since it is divisible by the number (40) 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 4230781009920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7736072562000).

4230781009920 is an abundant number, since it is smaller than the sum of its proper divisors (11241364114080).

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

4230781009920 is an frugal number, since it uses more digits than its factorization.

4230781009920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 4230781009920 in words is "four trillion, two hundred thirty billion, seven hundred eighty-one million, nine thousand, nine hundred twenty".