6777801578063 has 2 divisors, whose sum is σ = 6777801578064. Its totient is φ = 6777801578062.

The previous prime is 6777801577931. The next prime is 6777801578077. The reversal of 6777801578063 is 3608751087776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6777801578063 - 2¹⁸ = 6777801315919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6777801578363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388900789031 + 3388900789032.

It is an arithmetic number, because the mean of its divisors is an integer number (3388900789032).

Almost surely, 2^{6777801578063} is an apocalyptic number.

6777801578063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6777801578063 is an equidigital number, since it uses as much as digits as its factorization.

6777801578063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 65.

The spelling of 6777801578063 in words is "six trillion, seven hundred seventy-seven billion, eight hundred one million, five hundred seventy-eight thousand, sixty-three".