6391468512 has 576 divisors, whose sum is σ = 23394873600. Its totient is φ = 1673256960.

The previous prime is 6391468487. The next prime is 6391468513. The reversal of 6391468512 is 2158641936.

6391468512 is a `hidden beast` number, since 6 + 3 + 91 + 46 + 8 + 512 = 666.

Its product of digits (311040) is a multiple of the sum of its prime factors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6391468513) by changing a digit.

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, 35706439 + ... + 35706617.

It is an arithmetic number, because the mean of its divisors is an integer number (40616100).

Almost surely, 2^6391468512 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 6391468512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11697436800).

6391468512 is an abundant number, since it is smaller than the sum of its proper divisors (17003405088).

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

6391468512 is a wasteful number, since it uses less digits than its factorization.

6391468512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 225 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6391468512 is about 79946.6604180562. The cubic root of 6391468512 is about 1855.8101736843.

The spelling of 6391468512 in words is "six billion, three hundred ninety-one million, four hundred sixty-eight thousand, five hundred twelve".