899988641280 has 800 divisors, whose sum is σ = 3307596630624. Its totient is φ = 234770006016.

The previous prime is 899988641267. The next prime is 899988641303. The reversal of 899988641280 is 82146889998.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 899988641199 and 899988641208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2670589272 + ... + 2670589608.

Almost surely, 2^899988641280 is an apocalyptic number.

899988641280 is a gapful number since it is divisible by the number (80) 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 899988641280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653798315312).

899988641280 is an abundant number, since it is smaller than the sum of its proper divisors (2407607989344).

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

899988641280 is an frugal number, since it uses more digits than its factorization.

899988641280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 72.

The spelling of 899988641280 in words is "eight hundred ninety-nine billion, nine hundred eighty-eight million, six hundred forty-one thousand, two hundred eighty".