999780450300 has 216 divisors, whose sum is σ = 3305027631360. Its totient is φ = 252090921600.

The previous prime is 999780450241. The next prime is 999780450301. The reversal of 999780450300 is 3054087999.

999780450300 is a `hidden beast` number, since 9 + 99 + 78 + 0 + 450 + 30 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999780450301) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8887405 + ... + 8999195.

Almost surely, 2^999780450300 is an apocalyptic number.

999780450300 is a gapful number since it is divisible by the number (90) 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 999780450300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652513815680).

999780450300 is an abundant number, since it is smaller than the sum of its proper divisors (2305247181060).

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

999780450300 is a wasteful number, since it uses less digits than its factorization.

999780450300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112353 (or 112343 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 999780450300 in words is "nine hundred ninety-nine billion, seven hundred eighty million, four hundred fifty thousand, three hundred".