1310355243985 has 16 divisors (see below), whose sum is σ = 1622944440000. Its totient is φ = 1015135805376.

The previous prime is 1310355243947. The next prime is 1310355243991. The reversal of 1310355243985 is 5893425530131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310355243985 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 33128610 + ... + 33168139.

It is an arithmetic number, because the mean of its divisors is an integer number (101434027500).

Almost surely, 2^{1310355243985} is an apocalyptic number.

It is an amenable number.

1310355243985 is a deficient number, since it is larger than the sum of its proper divisors (312589196015).

1310355243985 is an equidigital number, since it uses as much as digits as its factorization.

1310355243985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66296880.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 1310355243985 in words is "one trillion, three hundred ten billion, three hundred fifty-five million, two hundred forty-three thousand, nine hundred eighty-five".