6920861346977 has 2 divisors, whose sum is σ = 6920861346978. Its totient is φ = 6920861346976.

The previous prime is 6920861346911. The next prime is 6920861346989. The reversal of 6920861346977 is 7796431680296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6336945294241 + 583916052736 = 2517329^2 + 764144^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920861346977 - 2¹⁰ = 6920861345953 is a prime.

It is not a weakly prime, because it can be changed into another prime (6920861346907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460430673488 + 3460430673489.

It is an arithmetic number, because the mean of its divisors is an integer number (3460430673489).

Almost surely, 2^{6920861346977} is an apocalyptic number.

It is an amenable number.

6920861346977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920861346977 is an equidigital number, since it uses as much as digits as its factorization.

6920861346977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164602368, while the sum is 68.

The spelling of 6920861346977 in words is "six trillion, nine hundred twenty billion, eight hundred sixty-one million, three hundred forty-six thousand, nine hundred seventy-seven".