540857681844 has 48 divisors (see below), whose sum is σ = 1289451668736. Its totient is φ = 176367974400.

The previous prime is 540857681729. The next prime is 540857681849. The reversal of 540857681844 is 448186758045.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540857681849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996924 + ... + 1440684.

It is an arithmetic number, because the mean of its divisors is an integer number (26863576432).

Almost surely, 2^540857681844 is an apocalyptic number.

It is an amenable number.

540857681844 is an abundant number, since it is smaller than the sum of its proper divisors (748593986892).

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

540857681844 is a wasteful number, since it uses less digits than its factorization.

540857681844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445976 (or 445974 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 60.

The spelling of 540857681844 in words is "five hundred forty billion, eight hundred fifty-seven million, six hundred eighty-one thousand, eight hundred forty-four".