6855910061485 has 4 divisors (see below), whose sum is σ = 8227092073788. Its totient is φ = 5484728049184.

The previous prime is 6855910061471. The next prime is 6855910061501. The reversal of 6855910061485 is 5841600195586.

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 2901551119236 + 3954358942249 = 1703394^2 + 1988557^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855910061485 - 2⁹ = 6855910060973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685591006144 + ... + 685591006153.

It is an arithmetic number, because the mean of its divisors is an integer number (2056773018447).

Almost surely, 2^{6855910061485} is an apocalyptic number.

It is an amenable number.

6855910061485 is a deficient number, since it is larger than the sum of its proper divisors (1371182012303).

6855910061485 is a wasteful number, since it uses less digits than its factorization.

6855910061485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371182012302.

The product of its (nonzero) digits is 10368000, while the sum is 58.

The spelling of 6855910061485 in words is "six trillion, eight hundred fifty-five billion, nine hundred ten million, sixty-one thousand, four hundred eighty-five".