981700709500 has 96 divisors (see below), whose sum is σ = 2450696242176. Its totient is φ = 336532104000.

The previous prime is 981700709491. The next prime is 981700709501. The reversal of 981700709500 is 5907007189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981700709501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28581337 + ... + 28615663.

It is an arithmetic number, because the mean of its divisors is an integer number (25528085856).

Almost surely, 2^981700709500 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 981700709500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225348121088).

981700709500 is an abundant number, since it is smaller than the sum of its proper divisors (1468995532676).

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

981700709500 is a wasteful number, since it uses less digits than its factorization.

981700709500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42524 (or 42512 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 981700709500 in words is "nine hundred eighty-one billion, seven hundred million, seven hundred nine thousand, five hundred".