1315319629777 has 2 divisors, whose sum is σ = 1315319629778. Its totient is φ = 1315319629776.

The previous prime is 1315319629763. The next prime is 1315319629823. The reversal of 1315319629777 is 7779269135131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1186162770321 + 129156859456 = 1089111^2 + 359384^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315319629777 - 2¹¹ = 1315319627729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315319629177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657659814888 + 657659814889.

It is an arithmetic number, because the mean of its divisors is an integer number (657659814889).

Almost surely, 2^{1315319629777} is an apocalyptic number.

It is an amenable number.

1315319629777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315319629777 is an equidigital number, since it uses as much as digits as its factorization.

1315319629777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15002820, while the sum is 61.

The spelling of 1315319629777 in words is "one trillion, three hundred fifteen billion, three hundred nineteen million, six hundred twenty-nine thousand, seven hundred seventy-seven".