987183332040 has 128 divisors (see below), whose sum is σ = 2984615424000. Its totient is φ = 261200871168.

The previous prime is 987183332011. The next prime is 987183332077. The reversal of 987183332040 is 40233381789.

It is a Cunningham number, because it is equal to 993571²-1.

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, 29790601 + ... + 29823719.

It is an arithmetic number, because the mean of its divisors is an integer number (23317308000).

Almost surely, 2^987183332040 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 987183332040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492307712000).

987183332040 is an abundant number, since it is smaller than the sum of its proper divisors (1997432091960).

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

987183332040 is a wasteful number, since it uses less digits than its factorization.

987183332040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35059 (or 35055 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 987183332040 in words is "nine hundred eighty-seven billion, one hundred eighty-three million, three hundred thirty-two thousand, forty".