985889387280 has 320 divisors, whose sum is σ = 3678610268160. Its totient is φ = 213374932992.

The previous prime is 985889387279. The next prime is 985889387281. The reversal of 985889387280 is 82783988589.

It is an interprime number because it is at equal distance from previous prime (985889387279) and next prime (985889387281).

It is not an unprimeable number, because it can be changed into a prime (985889387281) 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, 71398137 + ... + 71411943.

It is an arithmetic number, because the mean of its divisors is an integer number (11495657088).

Almost surely, 2^985889387280 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 985889387280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1839305134080).

985889387280 is an abundant number, since it is smaller than the sum of its proper divisors (2692720880880).

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

985889387280 is a wasteful number, since it uses less digits than its factorization.

985889387280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16086 (or 16080 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 75.

The spelling of 985889387280 in words is "nine hundred eighty-five billion, eight hundred eighty-nine million, three hundred eighty-seven thousand, two hundred eighty".