1278313285585 has 16 divisors (see below), whose sum is σ = 1763870679936. Its totient is φ = 871180023168.

The previous prime is 1278313285573. The next prime is 1278313285607. The reversal of 1278313285585 is 5855823138721.

It is not a de Polignac number, because 1278313285585 - 2⁵ = 1278313285553 is a prime.

It is a super-2 number, since 2×1278313285585² (a number of 25 digits) contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 112028764 + ... + 112040173.

It is an arithmetic number, because the mean of its divisors is an integer number (110241917496).

Almost surely, 2^{1278313285585} is an apocalyptic number.

It is an amenable number.

1278313285585 is a deficient number, since it is larger than the sum of its proper divisors (485557394351).

1278313285585 is a wasteful number, since it uses less digits than its factorization.

1278313285585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224069112.

The product of its digits is 16128000, while the sum is 58.

The spelling of 1278313285585 in words is "one trillion, two hundred seventy-eight billion, three hundred thirteen million, two hundred eighty-five thousand, five hundred eighty-five".