540821984836 has 27 divisors (see below), whose sum is σ = 1100980000029. Its totient is φ = 231776438208.

The previous prime is 540821984831. The next prime is 540821984839. The reversal of 540821984836 is 638489128045.

The square root of 540821984836 is 735406.

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

It can be written as a sum of positive squares in only one way, i.e., 14906944836 + 525915040000 = 122094^2 + 725200^2 .

It is a super-2 number, since 2×540821984836² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (540821984831) 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 8 ways as a sum of consecutive naturals, for example, 10269420 + ... + 10321948.

Almost surely, 2^540821984836 is an apocalyptic number.

540821984836 is the 735406-th square number.

It is an amenable number.

540821984836 is an abundant number, since it is smaller than the sum of its proper divisors (560158015193).

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

540821984836 is an frugal number, since it uses more digits than its factorization.

540821984836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105076 (or 52538 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 540821984836 in words is "five hundred forty billion, eight hundred twenty-one million, nine hundred eighty-four thousand, eight hundred thirty-six".