642338548586 has 32 divisors (see below), whose sum is σ = 1149911900928. Its totient is φ = 263116339200.

The previous prime is 642338548559. The next prime is 642338548597. The reversal of 642338548586 is 685845833246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347735 + ... + 1185578.

It is an arithmetic number, because the mean of its divisors is an integer number (35934746904).

Almost surely, 2^642338548586 is an apocalyptic number.

642338548586 is a deficient number, since it is larger than the sum of its proper divisors (507573352342).

642338548586 is a wasteful number, since it uses less digits than its factorization.

642338548586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534646.

The product of its digits is 132710400, while the sum is 62.

The spelling of 642338548586 in words is "six hundred forty-two billion, three hundred thirty-eight million, five hundred forty-eight thousand, five hundred eighty-six".