5991447616560 has 640 divisors, whose sum is σ = 25627616870400. Its totient is φ = 1255542819840.

The previous prime is 5991447616537. The next prime is 5991447616571. The reversal of 5991447616560 is 656167441995.

5991447616560 is a `hidden beast` number, since 5 + 9 + 9 + 1 + 4 + 4 + 7 + 61 + 6 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8569297 + ... + 9242063.

It is an arithmetic number, because the mean of its divisors is an integer number (40043151360).

Almost surely, 2^{5991447616560} 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 5991447616560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12813808435200).

5991447616560 is an abundant number, since it is smaller than the sum of its proper divisors (19636169253840).

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

5991447616560 is a wasteful number, since it uses less digits than its factorization.

5991447616560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672846 (or 672834 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 5991447616560 in words is "five trillion, nine hundred ninety-one billion, four hundred forty-seven million, six hundred sixteen thousand, five hundred sixty".