6563156940877 has 2 divisors, whose sum is σ = 6563156940878. Its totient is φ = 6563156940876.

The previous prime is 6563156940859. The next prime is 6563156940889. The reversal of 6563156940877 is 7780496513656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5885771975721 + 677384965156 = 2426061^2 + 823034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6563156940877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6563156940577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281578470438 + 3281578470439.

It is an arithmetic number, because the mean of its divisors is an integer number (3281578470439).

Almost surely, 2^{6563156940877} is an apocalyptic number.

It is an amenable number.

6563156940877 is a deficient number, since it is larger than the sum of its proper divisors (1).

6563156940877 is an equidigital number, since it uses as much as digits as its factorization.

6563156940877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 228614400, while the sum is 67.

The spelling of 6563156940877 in words is "six trillion, five hundred sixty-three billion, one hundred fifty-six million, nine hundred forty thousand, eight hundred seventy-seven".