506868806777 has 2 divisors, whose sum is σ = 506868806778. Its totient is φ = 506868806776.

The previous prime is 506868806753. The next prime is 506868806779. The reversal of 506868806777 is 777608868605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270513371881 + 236355434896 = 520109^2 + 486164^2 .

It is a cyclic number.

It is not a de Polignac number, because 506868806777 - 2²⁴ = 506852029561 is a prime.

It is a super-2 number, since 2×506868806777² (a number of 24 digits) contains 22 as substring.

Together with 506868806779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506868806779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253434403388 + 253434403389.

It is an arithmetic number, because the mean of its divisors is an integer number (253434403389).

Almost surely, 2^506868806777 is an apocalyptic number.

It is an amenable number.

506868806777 is a deficient number, since it is larger than the sum of its proper divisors (1).

506868806777 is an equidigital number, since it uses as much as digits as its factorization.

506868806777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189665280, while the sum is 68.

The spelling of 506868806777 in words is "five hundred six billion, eight hundred sixty-eight million, eight hundred six thousand, seven hundred seventy-seven".