855313583673 has 4 divisors (see below), whose sum is σ = 1140418111568. Its totient is φ = 570209055780.

The previous prime is 855313583671. The next prime is 855313583687. The reversal of 855313583673 is 376385313558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 855313583673 - 2¹ = 855313583671 is a prime.

It is a super-2 number, since 2×855313583673² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855313583671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142552263943 + ... + 142552263948.

It is an arithmetic number, because the mean of its divisors is an integer number (285104527892).

Almost surely, 2^855313583673 is an apocalyptic number.

It is an amenable number.

855313583673 is a deficient number, since it is larger than the sum of its proper divisors (285104527895).

855313583673 is a wasteful number, since it uses less digits than its factorization.

855313583673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285104527894.

The product of its digits is 27216000, while the sum is 57.

The spelling of 855313583673 in words is "eight hundred fifty-five billion, three hundred thirteen million, five hundred eighty-three thousand, six hundred seventy-three".