987421074224640 has 320 divisors, whose sum is σ = 3446034510961152. Its totient is φ = 239207732019200.

The previous prime is 987421074224621. The next prime is 987421074224693. The reversal of 987421074224640 is 46422470124789.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

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

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, 116981605 + ... + 125138075.

Almost surely, 2^{987421074224640} 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 987421074224640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723017255480576).

987421074224640 is an abundant number, since it is smaller than the sum of its proper divisors (2458613436736512).

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

987421074224640 is a wasteful number, since it uses less digits than its factorization.

987421074224640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157941 (or 8157925 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 60.

The spelling of 987421074224640 in words is "nine hundred eighty-seven trillion, four hundred twenty-one billion, seventy-four million, two hundred twenty-four thousand, six hundred forty".