542432540644 has 12 divisors (see below), whose sum is σ = 950724117504. Its totient is φ = 270797078504.

The previous prime is 542432540633. The next prime is 542432540777. The reversal of 542432540644 is 446045234245.

It is a super-2 number, since 2×542432540644² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 542432540644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104795044 + ... + 104800219.

It is an arithmetic number, because the mean of its divisors is an integer number (79227009792).

Almost surely, 2^542432540644 is an apocalyptic number.

It is an amenable number.

542432540644 is a deficient number, since it is larger than the sum of its proper divisors (408291576860).

542432540644 is a wasteful number, since it uses less digits than its factorization.

542432540644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209595914 (or 209595912 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 542432540644 its reverse (446045234245), we get a palindrome (988477774889).

The spelling of 542432540644 in words is "five hundred forty-two billion, four hundred thirty-two million, five hundred forty thousand, six hundred forty-four".