6331778778582 has 48 divisors (see below), whose sum is σ = 13737376532880. Its totient is φ = 2107743823296.

The previous prime is 6331778778529. The next prime is 6331778778583. The reversal of 6331778778582 is 2858778771336.

6331778778582 is a `hidden beast` number, since 6 + 3 + 31 + 7 + 7 + 8 + 7 + 7 + 8 + 582 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6331778778582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6331778778583) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 286378144 + ... + 286400252.

It is an arithmetic number, because the mean of its divisors is an integer number (286195344435).

Almost surely, 2^{6331778778582} is an apocalyptic number.

6331778778582 is an abundant number, since it is smaller than the sum of its proper divisors (7405597754298).

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

6331778778582 is a wasteful number, since it uses less digits than its factorization.

6331778778582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42877 (or 42874 counting only the distinct ones).

The product of its digits is 663828480, while the sum is 72.

The spelling of 6331778778582 in words is "six trillion, three hundred thirty-one billion, seven hundred seventy-eight million, seven hundred seventy-eight thousand, five hundred eighty-two".