642223353712 has 20 divisors (see below), whose sum is σ = 1317502321776. Its totient is φ = 302222754560.

The previous prime is 642223353689. The next prime is 642223353731. The reversal of 642223353712 is 217353322246.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1180557364 + ... + 1180557907.

Almost surely, 2^642223353712 is an apocalyptic number.

It is an amenable number.

642223353712 is an abundant number, since it is smaller than the sum of its proper divisors (675278968064).

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

642223353712 is a wasteful number, since it uses less digits than its factorization.

642223353712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361115296 (or 2361115290 counting only the distinct ones).

The product of its digits is 362880, while the sum is 40.

Adding to 642223353712 its reverse (217353322246), we get a palindrome (859576675958).

The spelling of 642223353712 in words is "six hundred forty-two billion, two hundred twenty-three million, three hundred fifty-three thousand, seven hundred twelve".