99870042250000 has 945 divisors, whose sum is σ = 281480773933569. Its totient is φ = 34297692000000.

The previous prime is 99870042249941. The next prime is 99870042250007. The reversal of 99870042250000 is 5224007899.

The square root of 99870042250000 is 9993500.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 87495744535056 + 12374297714944 = 9353916^2 + 3517712^2 .

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (99870042250007) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 1264177749961 + ... + 1264177750039.

Almost surely, 2^{99870042250000} is an apocalyptic number.

99870042250000 is the 9993500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99870042250000

99870042250000 is an abundant number, since it is smaller than the sum of its proper divisors (181610731683569).

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

99870042250000 is an frugal number, since it uses more digits than its factorization.

99870042250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

Adding to 99870042250000 its reverse (5224007899), we get a palindrome (99875266257899).

The spelling of 99870042250000 in words is "ninety-nine trillion, eight hundred seventy billion, forty-two million, two hundred fifty thousand".