551315836656 has 240 divisors, whose sum is σ = 1679338140480. Its totient is φ = 167834419200.

The previous prime is 551315836649. The next prime is 551315836657. The reversal of 551315836656 is 656638513155.

551315836656 is a `hidden beast` number, since 5 + 5 + 1 + 3 + 1 + 583 + 6 + 6 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551315836657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72642910 + ... + 72650498.

It is an arithmetic number, because the mean of its divisors is an integer number (6997242252).

Almost surely, 2^551315836656 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 551315836656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839669070240).

551315836656 is an abundant number, since it is smaller than the sum of its proper divisors (1128022303824).

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

551315836656 is a wasteful number, since it uses less digits than its factorization.

551315836656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8024 (or 8015 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 551315836656 in words is "five hundred fifty-one billion, three hundred fifteen million, eight hundred thirty-six thousand, six hundred fifty-six".