551538288606240 has 576 divisors, whose sum is σ = 2096498814359040. Its totient is φ = 131166011473920.

The previous prime is 551538288606169. The next prime is 551538288606341. The reversal of 551538288606240 is 42606882835155.

551538288606240 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 382 + 8 + 8 + 6 + 0 + 6 + 240 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75566221 + ... + 82542899.

It is an arithmetic number, because the mean of its divisors is an integer number (3639754886040).

Almost surely, 2^{551538288606240} 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 551538288606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048249407179520).

551538288606240 is an abundant number, since it is smaller than the sum of its proper divisors (1544960525752800).

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

551538288606240 is a wasteful number, since it uses less digits than its factorization.

551538288606240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976857 (or 6976846 counting only the distinct ones).

The product of its (nonzero) digits is 110592000, while the sum is 63.

The spelling of 551538288606240 in words is "five hundred fifty-one trillion, five hundred thirty-eight billion, two hundred eighty-eight million, six hundred six thousand, two hundred forty".