1311285486885 has 128 divisors (see below), whose sum is σ = 2504287715328. Its totient is φ = 578451456000.

The previous prime is 1311285486877. The next prime is 1311285486943. The reversal of 1311285486885 is 5886845821131.

It is not a de Polignac number, because 1311285486885 - 2³ = 1311285486877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 86164797 + ... + 86180013.

It is an arithmetic number, because the mean of its divisors is an integer number (19564747776).

Almost surely, 2^{1311285486885} is an apocalyptic number.

1311285486885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311285486885 is a deficient number, since it is larger than the sum of its proper divisors (1193002228443).

1311285486885 is a wasteful number, since it uses less digits than its factorization.

1311285486885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16275.

The product of its digits is 14745600, while the sum is 60.

The spelling of 1311285486885 in words is "one trillion, three hundred eleven billion, two hundred eighty-five million, four hundred eighty-six thousand, eight hundred eighty-five".