642330534050 has 24 divisors (see below), whose sum is σ = 1196879790996. Its totient is φ = 256470923840.

The previous prime is 642330533993. The next prime is 642330534119. The reversal of 642330534050 is 50435033246.

It can be written as a sum of positive squares in 6 ways, for example, as 24687008641 + 617643525409 = 157121^2 + 785903^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 642330534050.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11504117 + ... + 11559816.

Almost surely, 2^642330534050 is an apocalyptic number.

642330534050 is a deficient number, since it is larger than the sum of its proper divisors (554549256946).

642330534050 is a wasteful number, since it uses less digits than its factorization.

642330534050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23064502 (or 23064497 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 642330534050 its reverse (50435033246), we get a palindrome (692765567296).

The spelling of 642330534050 in words is "six hundred forty-two billion, three hundred thirty million, five hundred thirty-four thousand, fifty".