856486430064 has 100 divisors (see below), whose sum is σ = 2503464362520. Its totient is φ = 282668745600.

The previous prime is 856486430017. The next prime is 856486430069. The reversal of 856486430064 is 460034684658.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856486430069) 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 19 ways as a sum of consecutive naturals, for example, 3140734 + ... + 3402525.

Almost surely, 2^856486430064 is an apocalyptic number.

It is an amenable number.

856486430064 is an abundant number, since it is smaller than the sum of its proper divisors (1646977932456).

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

856486430064 is a wasteful number, since it uses less digits than its factorization.

856486430064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543380 (or 6543365 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 856486430064 in words is "eight hundred fifty-six billion, four hundred eighty-six million, four hundred thirty thousand, sixty-four".