5991495289920 has 672 divisors, whose sum is σ = 24883929302400. Its totient is φ = 1352976887808.

The previous prime is 5991495289889. The next prime is 5991495289931. The reversal of 5991495289920 is 299825941995.

5991495289920 is a `hidden beast` number, since 5 + 9 + 9 + 1 + 4 + 9 + 528 + 9 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35053626 + ... + 35224134.

It is an arithmetic number, because the mean of its divisors is an integer number (37029656700).

Almost surely, 2^{5991495289920} 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 5991495289920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12441964651200).

5991495289920 is an abundant number, since it is smaller than the sum of its proper divisors (18892434012480).

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

5991495289920 is a wasteful number, since it uses less digits than its factorization.

5991495289920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170632 (or 170609 counting only the distinct ones).

The product of its (nonzero) digits is 188956800, while the sum is 72.

The spelling of 5991495289920 in words is "five trillion, nine hundred ninety-one billion, four hundred ninety-five million, two hundred eighty-nine thousand, nine hundred twenty".