856389674268 has 60 divisors (see below), whose sum is σ = 2275473001032. Its totient is φ = 280783493280.

The previous prime is 856389674201. The next prime is 856389674321. The reversal of 856389674268 is 862476983658.

856389674268 is a `hidden beast` number, since 8 + 5 + 63 + 89 + 67 + 426 + 8 = 666.

856389674268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×856389674268² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 856389674196 and 856389674205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21645630 + ... + 21685157.

Almost surely, 2^856389674268 is an apocalyptic number.

It is an amenable number.

856389674268 is an abundant number, since it is smaller than the sum of its proper divisors (1419083326764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856389674268 is a wasteful number, since it uses less digits than its factorization.

856389674268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43330864 (or 43330853 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 72.

The spelling of 856389674268 in words is "eight hundred fifty-six billion, three hundred eighty-nine million, six hundred seventy-four thousand, two hundred sixty-eight".