6784996636656 has 400 divisors, whose sum is σ = 23303594635200. Its totient is φ = 1864745680896.

The previous prime is 6784996636591. The next prime is 6784996636697. The reversal of 6784996636656 is 6566366994876.

6784996636656 is a `hidden beast` number, since 6 + 7 + 8 + 499 + 6 + 63 + 6 + 65 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 70722736 + ... + 70818608.

It is an arithmetic number, because the mean of its divisors is an integer number (58258986588).

Almost surely, 2^{6784996636656} 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 6784996636656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11651797317600).

6784996636656 is an abundant number, since it is smaller than the sum of its proper divisors (16518597998544).

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

6784996636656 is a wasteful number, since it uses less digits than its factorization.

6784996636656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96198 (or 96183 counting only the distinct ones).

The product of its digits is 12697896960, while the sum is 81.

The spelling of 6784996636656 in words is "six trillion, seven hundred eighty-four billion, nine hundred ninety-six million, six hundred thirty-six thousand, six hundred fifty-six".