642482585218 has 8 divisors (see below), whose sum is σ = 966583593612. Its totient is φ = 320288054016.

The previous prime is 642482585209. The next prime is 642482585243. The reversal of 642482585218 is 812585284246.

642482585218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 633381997609 + 9100587609 = 795853^2 + 95397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 476618455 + ... + 476619802.

Almost surely, 2^642482585218 is an apocalyptic number.

642482585218 is a deficient number, since it is larger than the sum of its proper divisors (324101008394).

642482585218 is a wasteful number, since it uses less digits than its factorization.

642482585218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953238596.

The product of its digits is 9830400, while the sum is 55.

The spelling of 642482585218 in words is "six hundred forty-two billion, four hundred eighty-two million, five hundred eighty-five thousand, two hundred eighteen".