8777776506977 has 2 divisors, whose sum is σ = 8777776506978. Its totient is φ = 8777776506976.

The previous prime is 8777776506949. The next prime is 8777776507069. The reversal of 8777776506977 is 7796056777778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7040483798881 + 1737292708096 = 2653391^2 + 1318064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8777776506977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8777776506895 and 8777776506904.

It is not a weakly prime, because it can be changed into another prime (8777776506277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4388888253488 + 4388888253489.

It is an arithmetic number, because the mean of its divisors is an integer number (4388888253489).

Almost surely, 2^{8777776506977} is an apocalyptic number.

It is an amenable number.

8777776506977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8777776506977 is an equidigital number, since it uses as much as digits as its factorization.

8777776506977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10673117280, while the sum is 83.

The spelling of 8777776506977 in words is "eight trillion, seven hundred seventy-seven billion, seven hundred seventy-six million, five hundred six thousand, nine hundred seventy-seven".