6778872544228 has 12 divisors (see below), whose sum is σ = 12560852067372. Its totient is φ = 3190057667840.

The previous prime is 6778872544219. The next prime is 6778872544259. The reversal of 6778872544228 is 8224452788776.

It can be written as a sum of positive squares in 2 ways, for example, as 6079538411584 + 699334132644 = 2465672^2 + 836262^2 .

It is a super-2 number, since 2×6778872544228² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49844650993 + ... + 49844651128.

It is an arithmetic number, because the mean of its divisors is an integer number (1046737672281).

Almost surely, 2^{6778872544228} is an apocalyptic number.

6778872544228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6778872544228 is a deficient number, since it is larger than the sum of its proper divisors (5781979523144).

6778872544228 is a wasteful number, since it uses less digits than its factorization.

6778872544228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99689302142 (or 99689302140 counting only the distinct ones).

The product of its digits is 674365440, while the sum is 70.

The spelling of 6778872544228 in words is "six trillion, seven hundred seventy-eight billion, eight hundred seventy-two million, five hundred forty-four thousand, two hundred twenty-eight".