1316516732985 has 16 divisors (see below), whose sum is σ = 2125751791680. Its totient is φ = 695700584640.

The previous prime is 1316516732977. The next prime is 1316516732989. The reversal of 1316516732985 is 5892376156131.

It is not a de Polignac number, because 1316516732985 - 2³ = 1316516732977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1316516732989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402602871 + ... + 402606140.

It is an arithmetic number, because the mean of its divisors is an integer number (132859486980).

Almost surely, 2^{1316516732985} is an apocalyptic number.

1316516732985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1316516732985 is a deficient number, since it is larger than the sum of its proper divisors (809235058695).

1316516732985 is a wasteful number, since it uses less digits than its factorization.

1316516732985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805209128.

The product of its digits is 8164800, while the sum is 57.

The spelling of 1316516732985 in words is "one trillion, three hundred sixteen billion, five hundred sixteen million, seven hundred thirty-two thousand, nine hundred eighty-five".