84713865728 has 90 divisors (see below), whose sum is σ = 178903945341. Its totient is φ = 40068347904.

The previous prime is 84713865683. The next prime is 84713865739. The reversal of 84713865728 is 82756831748.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 48844536064 + 35869329664 = 221008^2 + 189392^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=205808.

It is a super-2 number, since 2×84713865728² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125130926 + ... + 125131602.

Almost surely, 2^84713865728 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 84713865728

84713865728 is an abundant number, since it is smaller than the sum of its proper divisors (94190079613).

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

84713865728 is an frugal number, since it uses more digits than its factorization.

84713865728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 698 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 59.

The spelling of 84713865728 in words is "eighty-four billion, seven hundred thirteen million, eight hundred sixty-five thousand, seven hundred twenty-eight".