1368686688085 has 4 divisors (see below), whose sum is σ = 1642424025708. Its totient is φ = 1094949350464.

The previous prime is 1368686688059. The next prime is 1368686688091. The reversal of 1368686688085 is 5808866868631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 866524542129 + 502162145956 = 930873^2 + 708634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368686688085 - 2⁵ = 1368686688053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1368686687999 and 1368686688017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136868668804 + ... + 136868668813.

It is an arithmetic number, because the mean of its divisors is an integer number (410606006427).

Almost surely, 2^{1368686688085} is an apocalyptic number.

It is an amenable number.

1368686688085 is a deficient number, since it is larger than the sum of its proper divisors (273737337623).

1368686688085 is an equidigital number, since it uses as much as digits as its factorization.

1368686688085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273737337622.

The product of its (nonzero) digits is 637009920, while the sum is 73.

The spelling of 1368686688085 in words is "one trillion, three hundred sixty-eight billion, six hundred eighty-six million, six hundred eighty-eight thousand, eighty-five".