6777778249422 has 48 divisors (see below), whose sum is σ = 14706033342000. Its totient is φ = 2256053212800.

The previous prime is 6777778249421. The next prime is 6777778249477. The reversal of 6777778249422 is 2249428777776.

6777778249422 is a `hidden beast` number, since 67 + 7 + 7 + 7 + 78 + 2 + 494 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777778249421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83883522 + ... + 83964282.

It is an arithmetic number, because the mean of its divisors is an integer number (306375694625).

Almost surely, 2^{6777778249422} is an apocalyptic number.

6777778249422 is an abundant number, since it is smaller than the sum of its proper divisors (7928255092578).

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

6777778249422 is a wasteful number, since it uses less digits than its factorization.

6777778249422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87329 (or 87326 counting only the distinct ones).

The product of its digits is 929359872, while the sum is 72.

The spelling of 6777778249422 in words is "six trillion, seven hundred seventy-seven billion, seven hundred seventy-eight million, two hundred forty-nine thousand, four hundred twenty-two".