855005260081 has 8 divisors (see below), whose sum is σ = 984178717760. Its totient is φ = 727589264688.

The previous prime is 855005259991. The next prime is 855005260099. The reversal of 855005260081 is 180062500558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855005260081 - 2¹¹ = 855005258033 is a prime.

It is a super-2 number, since 2×855005260081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (855005230081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 439364526 + ... + 439366471.

It is an arithmetic number, because the mean of its divisors is an integer number (123022339720).

Almost surely, 2^855005260081 is an apocalyptic number.

It is an amenable number.

855005260081 is a deficient number, since it is larger than the sum of its proper divisors (129173457679).

855005260081 is a wasteful number, since it uses less digits than its factorization.

855005260081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878731143.

The product of its (nonzero) digits is 96000, while the sum is 40.

The spelling of 855005260081 in words is "eight hundred fifty-five billion, five million, two hundred sixty thousand, eighty-one".