6579994647744 has 420 divisors, whose sum is σ = 23883893593560. Its totient is φ = 1781049876480.

The previous prime is 6579994647719. The next prime is 6579994647757. The reversal of 6579994647744 is 4477464999756.

6579994647744 is a `hidden beast` number, since 6 + 57 + 9 + 9 + 94 + 6 + 477 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4144624 + ... + 5507984.

It is an arithmetic number, because the mean of its divisors is an integer number (56866413318).

Almost surely, 2^{6579994647744} is an apocalyptic number.

6579994647744 is a gapful number since it is divisible by the number (64) 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 6579994647744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11941946796780).

6579994647744 is an abundant number, since it is smaller than the sum of its proper divisors (17303898945816).

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

6579994647744 is a wasteful number, since it uses less digits than its factorization.

6579994647744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363418 (or 1363392 counting only the distinct ones).

The product of its digits is 11522165760, while the sum is 81.

The spelling of 6579994647744 in words is "six trillion, five hundred seventy-nine billion, nine hundred ninety-four million, six hundred forty-seven thousand, seven hundred forty-four".