84856123356 has 72 divisors (see below), whose sum is σ = 212864467200. Its totient is φ = 26300698368.

The previous prime is 84856123321. The next prime is 84856123367. The reversal of 84856123356 is 65332165848.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 84856123299 and 84856123308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140445 + ... + 435243.

Almost surely, 2^84856123356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84856123356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106432233600).

84856123356 is an abundant number, since it is smaller than the sum of its proper divisors (128008343844).

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

84856123356 is a wasteful number, since it uses less digits than its factorization.

84856123356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294923 (or 294904 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The spelling of 84856123356 in words is "eighty-four billion, eight hundred fifty-six million, one hundred twenty-three thousand, three hundred fifty-six".