987549541440 has 896 divisors, whose sum is σ = 3964112732160. Its totient is φ = 202344652800.

The previous prime is 987549541411. The next prime is 987549541477. The reversal of 987549541440 is 44145945789.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2291298025 + ... + 2291298455.

It is an arithmetic number, because the mean of its divisors is an integer number (4424232960).

Almost surely, 2^987549541440 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 987549541440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982056366080).

987549541440 is an abundant number, since it is smaller than the sum of its proper divisors (2976563190720).

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

987549541440 is a wasteful number, since it uses less digits than its factorization.

987549541440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 987549541440 in words is "nine hundred eighty-seven billion, five hundred forty-nine million, five hundred forty-one thousand, four hundred forty".