853622685728 has 18 divisors (see below), whose sum is σ = 1680579952191. Its totient is φ = 426808729632.

The previous prime is 853622685697. The next prime is 853622685749. The reversal of 853622685728 is 827586226358.

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 only one way, i.e., 426811342864 + 426811342864 = 653308^2 + 653308^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=653308.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5144801 + ... + 5308127.

Almost surely, 2^853622685728 is an apocalyptic number.

It is an amenable number.

853622685728 is a deficient number, since it is larger than the sum of its proper divisors (826957266463).

853622685728 is an frugal number, since it uses more digits than its factorization.

853622685728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326664 (or 163329 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 62.

The spelling of 853622685728 in words is "eight hundred fifty-three billion, six hundred twenty-two million, six hundred eighty-five thousand, seven hundred twenty-eight".