987645333408 has 24 divisors (see below), whose sum is σ = 2592569000448. Its totient is φ = 329215111104.

The previous prime is 987645333401. The next prime is 987645333413. The reversal of 987645333408 is 804333546789.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (987645333401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5143986016 + ... + 5143986207.

It is an arithmetic number, because the mean of its divisors is an integer number (108023708352).

Almost surely, 2^987645333408 is an apocalyptic number.

It is an amenable number.

987645333408 is an abundant number, since it is smaller than the sum of its proper divisors (1604923667040).

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

987645333408 is a wasteful number, since it uses less digits than its factorization.

987645333408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10287972236 (or 10287972228 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 60.

The spelling of 987645333408 in words is "nine hundred eighty-seven billion, six hundred forty-five million, three hundred thirty-three thousand, four hundred eight".