1316768531585 has 16 divisors (see below), whose sum is σ = 1702237388880. Its totient is φ = 972058752000.

The previous prime is 1316768531569. The next prime is 1316768531593. The reversal of 1316768531585 is 5851358676131.

It can be written as a sum of positive squares in 8 ways, for example, as 12131700736 + 1304636830849 = 110144^2 + 1142207^2 .

It is not a de Polignac number, because 1316768531585 - 2⁴ = 1316768531569 is a prime.

It is a super-2 number, since 2×1316768531585² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3180140 + ... + 3570269.

It is an arithmetic number, because the mean of its divisors is an integer number (106389836805).

Almost surely, 2^{1316768531585} is an apocalyptic number.

It is an amenable number.

1316768531585 is a deficient number, since it is larger than the sum of its proper divisors (385468857295).

1316768531585 is a wasteful number, since it uses less digits than its factorization.

1316768531585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753428.

The product of its digits is 18144000, while the sum is 59.

The spelling of 1316768531585 in words is "one trillion, three hundred sixteen billion, seven hundred sixty-eight million, five hundred thirty-one thousand, five hundred eighty-five".