315320765777 has 2 divisors, whose sum is σ = 315320765778. Its totient is φ = 315320765776.

The previous prime is 315320765717. The next prime is 315320765803. The reversal of 315320765777 is 777567023513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181543314241 + 133777451536 = 426079^2 + 365756^2 .

It is a cyclic number.

It is not a de Polignac number, because 315320765777 - 2¹⁶ = 315320700241 is a prime.

It is not a weakly prime, because it can be changed into another prime (315320765717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157660382888 + 157660382889.

It is an arithmetic number, because the mean of its divisors is an integer number (157660382889).

Almost surely, 2^315320765777 is an apocalyptic number.

It is an amenable number.

315320765777 is a deficient number, since it is larger than the sum of its proper divisors (1).

315320765777 is an equidigital number, since it uses as much as digits as its factorization.

315320765777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6482700, while the sum is 53.

The spelling of 315320765777 in words is "three hundred fifteen billion, three hundred twenty million, seven hundred sixty-five thousand, seven hundred seventy-seven".