987119513800 has 144 divisors (see below), whose sum is σ = 2695678090560. Its totient is φ = 335154798720.

The previous prime is 987119513797. The next prime is 987119513851. The reversal of 987119513800 is 8315911789.

It is a happy number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 520437 + ... + 1498363.

It is an arithmetic number, because the mean of its divisors is an integer number (18719986740).

Almost surely, 2^987119513800 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 987119513800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347839045280).

987119513800 is an abundant number, since it is smaller than the sum of its proper divisors (1708558576760).

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

987119513800 is a wasteful number, since it uses less digits than its factorization.

987119513800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978060 (or 978044 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 987119513800 in words is "nine hundred eighty-seven billion, one hundred nineteen million, five hundred thirteen thousand, eight hundred".