985996247040 has 960 divisors, whose sum is σ = 4102407429120. Its totient is φ = 219980759040.

The previous prime is 985996247039. The next prime is 985996247053. The reversal of 985996247040 is 40742699589.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 665763100 + ... + 665764580.

It is an arithmetic number, because the mean of its divisors is an integer number (4273341072).

Almost surely, 2^985996247040 is an apocalyptic number.

985996247040 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 985996247040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051203714560).

985996247040 is an abundant number, since it is smaller than the sum of its proper divisors (3116411182080).

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

985996247040 is a wasteful number, since it uses less digits than its factorization.

985996247040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 985996247040 in words is "nine hundred eighty-five billion, nine hundred ninety-six million, two hundred forty-seven thousand, forty".