1050778713617 has 2 divisors, whose sum is σ = 1050778713618. Its totient is φ = 1050778713616.

The previous prime is 1050778713553. The next prime is 1050778713659. The reversal of 1050778713617 is 7163178770501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654746378896 + 396032334721 = 809164^2 + 629311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050778713617 - 2⁶ = 1050778713553 is a prime.

It is a super-2 number, since 2×1050778713617² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1050778713317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525389356808 + 525389356809.

It is an arithmetic number, because the mean of its divisors is an integer number (525389356809).

Almost surely, 2^{1050778713617} is an apocalyptic number.

It is an amenable number.

1050778713617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050778713617 is an equidigital number, since it uses as much as digits as its factorization.

1050778713617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728720, while the sum is 53.

The spelling of 1050778713617 in words is "one trillion, fifty billion, seven hundred seventy-eight million, seven hundred thirteen thousand, six hundred seventeen".