855489836179 has 4 divisors (see below), whose sum is σ = 933261639480. Its totient is φ = 777718032880.

The previous prime is 855489836177. The next prime is 855489836191. The reversal of 855489836179 is 971638984558.

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

It is a cyclic number.

It is not a de Polignac number, because 855489836179 - 2¹ = 855489836177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855489836177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38885901634 + ... + 38885901655.

It is an arithmetic number, because the mean of its divisors is an integer number (233315409870).

Almost surely, 2^855489836179 is an apocalyptic number.

855489836179 is a deficient number, since it is larger than the sum of its proper divisors (77771803301).

855489836179 is a wasteful number, since it uses less digits than its factorization.

855489836179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77771803300.

The product of its digits is 522547200, while the sum is 73.

The spelling of 855489836179 in words is "eight hundred fifty-five billion, four hundred eighty-nine million, eight hundred thirty-six thousand, one hundred seventy-nine".