856046478885 has 32 divisors (see below), whose sum is σ = 1475078989440. Its totient is φ = 421425393408.

The previous prime is 856046478883. The next prime is 856046478919. The reversal of 856046478885 is 588874640658.

It is not a de Polignac number, because 856046478885 - 2¹ = 856046478883 is a prime.

It is a super-2 number, since 2×856046478885² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856046478883) 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 31 ways as a sum of consecutive naturals, for example, 11033247 + ... + 11110563.

It is an arithmetic number, because the mean of its divisors is an integer number (46096218420).

Almost surely, 2^856046478885 is an apocalyptic number.

It is an amenable number.

856046478885 is a deficient number, since it is larger than the sum of its proper divisors (619032510555).

856046478885 is a wasteful number, since it uses less digits than its factorization.

856046478885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134117.

The product of its (nonzero) digits is 412876800, while the sum is 69.

The spelling of 856046478885 in words is "eight hundred fifty-six billion, forty-six million, four hundred seventy-eight thousand, eight hundred eighty-five".