5991787855872 has 1088 divisors, whose sum is σ = 22097438146560. Its totient is φ = 1562457931776.

The previous prime is 5991787855861. The next prime is 5991787855919. The reversal of 5991787855872 is 2785587871995.

5991787855872 is a `hidden beast` number, since 59 + 9 + 1 + 7 + 8 + 7 + 8 + 558 + 7 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5991787855791 and 5991787855800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20449787758 + ... + 20449788050.

Almost surely, 2^{5991787855872} is an apocalyptic number.

5991787855872 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5991787855872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11048719073280).

5991787855872 is an abundant number, since it is smaller than the sum of its proper divisors (16105650290688).

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

5991787855872 is a wasteful number, since it uses less digits than its factorization.

5991787855872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 445 counting only the distinct ones).

The product of its digits is 3556224000, while the sum is 81.

The spelling of 5991787855872 in words is "five trillion, nine hundred ninety-one billion, seven hundred eighty-seven million, eight hundred fifty-five thousand, eight hundred seventy-two".