6777802813 has 2 divisors, whose sum is σ = 6777802814. Its totient is φ = 6777802812.

The previous prime is 6777802753. The next prime is 6777802819. The reversal of 6777802813 is 3182087776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5968798564 + 809004249 = 77258^2 + 28443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6777802813 is a prime.

It is a super-2 number, since 2×6777802813² = 91877221943821425938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6777802819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388901406 + 3388901407.

It is an arithmetic number, because the mean of its divisors is an integer number (3388901407).

Almost surely, 2^6777802813 is an apocalyptic number.

It is an amenable number.

6777802813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6777802813 is an equidigital number, since it uses as much as digits as its factorization.

6777802813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 6777802813 is about 82327.4122816939. The cubic root of 6777802813 is about 1892.4727870318.

The spelling of 6777802813 in words is "six billion, seven hundred seventy-seven million, eight hundred two thousand, eight hundred thirteen".