983609716440 has 128 divisors (see below), whose sum is σ = 3179078461440. Its totient is φ = 242023128576.

The previous prime is 983609716423. The next prime is 983609716451. The reversal of 983609716440 is 44617906389.

983609716440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 991771²-1.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3843109 + ... + 4091051.

It is an arithmetic number, because the mean of its divisors is an integer number (24836550480).

Almost surely, 2^983609716440 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 983609716440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589539230720).

983609716440 is an abundant number, since it is smaller than the sum of its proper divisors (2195468745000).

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

983609716440 is a wasteful number, since it uses less digits than its factorization.

983609716440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250513 (or 250509 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 983609716440 in words is "nine hundred eighty-three billion, six hundred nine million, seven hundred sixteen thousand, four hundred forty".