642585324684 has 24 divisors (see below), whose sum is σ = 1507649551408. Its totient is φ = 213011709120.

The previous prime is 642585324679. The next prime is 642585324697. The reversal of 642585324684 is 486423585246.

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 7 ways as a sum of consecutive naturals, for example, 147922627 + ... + 147926970.

Almost surely, 2^642585324684 is an apocalyptic number.

It is an amenable number.

642585324684 is an abundant number, since it is smaller than the sum of its proper divisors (865064226724).

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

642585324684 is a wasteful number, since it uses less digits than its factorization.

642585324684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295849785 (or 295849783 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 57.

The spelling of 642585324684 in words is "six hundred forty-two billion, five hundred eighty-five million, three hundred twenty-four thousand, six hundred eighty-four".