542818244644 has 81 divisors (see below), whose sum is σ = 1054702783953. Its totient is φ = 244333855584.

The previous prime is 542818244627. The next prime is 542818244699. The reversal of 542818244644 is 446442818245.

The square root of 542818244644 is 736762.

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., 80298556900 + 462519687744 = 283370^2 + 680088^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 542818244591 and 542818244600.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 823699587 + ... + 823700245.

Almost surely, 2^542818244644 is an apocalyptic number.

542818244644 is the 736762-nd square number.

It is an amenable number.

542818244644 is a deficient number, since it is larger than the sum of its proper divisors (511884539309).

542818244644 is an equidigital number, since it uses as much as digits as its factorization.

542818244644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 717 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 52.

The spelling of 542818244644 in words is "five hundred forty-two billion, eight hundred eighteen million, two hundred forty-four thousand, six hundred forty-four".