99870004000 has 384 divisors, whose sum is σ = 279939179520. Its totient is φ = 34712064000.

The previous prime is 99870003983. The next prime is 99870004009. The reversal of 99870004000 is 40007899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99870004009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267747814 + ... + 267748186.

It is an arithmetic number, because the mean of its divisors is an integer number (729008280).

Almost surely, 2^99870004000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99870004000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139969589760).

99870004000 is an abundant number, since it is smaller than the sum of its proper divisors (180069175520).

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

99870004000 is a wasteful number, since it uses less digits than its factorization.

99870004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 99870004000 in words is "ninety-nine billion, eight hundred seventy million, four thousand".