642839219583 has 24 divisors (see below), whose sum is σ = 942167522688. Its totient is φ = 389580906000.

The previous prime is 642839219573. The next prime is 642839219623. The reversal of 642839219583 is 385912938246.

It is not a de Polignac number, because 642839219583 - 2¹⁰ = 642839218559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642839219573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13709248 + ... + 13756058.

It is an arithmetic number, because the mean of its divisors is an integer number (39256980112).

Almost surely, 2^642839219583 is an apocalyptic number.

642839219583 is a deficient number, since it is larger than the sum of its proper divisors (299328303105).

642839219583 is a wasteful number, since it uses less digits than its factorization.

642839219583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84667 (or 84656 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 642839219583 in words is "six hundred forty-two billion, eight hundred thirty-nine million, two hundred nineteen thousand, five hundred eighty-three".