855984897311 has 8 divisors (see below), whose sum is σ = 911082173184. Its totient is φ = 801414868480.

The previous prime is 855984897283. The next prime is 855984897329. The reversal of 855984897311 is 113798489558.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855984897311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855984897211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131808410 + ... + 131814903.

It is an arithmetic number, because the mean of its divisors is an integer number (113885271648).

Almost surely, 2^855984897311 is an apocalyptic number.

855984897311 is a deficient number, since it is larger than the sum of its proper divisors (55097275873).

855984897311 is a wasteful number, since it uses less digits than its factorization.

855984897311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263623521.

The product of its digits is 87091200, while the sum is 68.

The spelling of 855984897311 in words is "eight hundred fifty-five billion, nine hundred eighty-four million, eight hundred ninety-seven thousand, three hundred eleven".