854280578529 has 135 divisors (see below), whose sum is σ = 1578787655907. Its totient is φ = 458912635776.

The previous prime is 854280578491. The next prime is 854280578537. The reversal of 854280578529 is 925875082458.

The square root of 854280578529 is 924273.

It is a perfect power (a square), and thus also a powerful number.

854280578529 is a `hidden beast` number, since 8 + 5 + 4 + 2 + 8 + 0 + 578 + 52 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 665097336225 + 189183242304 = 815535^2 + 434952^2 .

It is not a de Polignac number, because 854280578529 - 2¹⁵ = 854280545761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (854280578549) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 989895952 + ... + 989896814.

Almost surely, 2^854280578529 is an apocalyptic number.

854280578529 is the 924273-rd square number.

854280578529 is the 462137-th centered octagonal number.

It is an amenable number.

854280578529 is a deficient number, since it is larger than the sum of its proper divisors (724507077378).

854280578529 is an frugal number, since it uses more digits than its factorization.

854280578529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

It can be divided in two parts, 854280 and 578529, that added together give a square (1432809 = 1197²).

The spelling of 854280578529 in words is "eight hundred fifty-four billion, two hundred eighty million, five hundred seventy-eight thousand, five hundred twenty-nine".