642066202022 has 48 divisors (see below), whose sum is σ = 1129485938688. Its totient is φ = 272926115280.

The previous prime is 642066201991. The next prime is 642066202031. The reversal of 642066202022 is 220202660246.

It is a self number, because there is not a number n which added to its sum of digits gives 642066202022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69580973 + ... + 69590199.

It is an arithmetic number, because the mean of its divisors is an integer number (23530957056).

Almost surely, 2^642066202022 is an apocalyptic number.

642066202022 is a deficient number, since it is larger than the sum of its proper divisors (487419736666).

642066202022 is a wasteful number, since it uses less digits than its factorization.

642066202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14961 (or 14954 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 642066202022 its reverse (220202660246), we get a palindrome (862268862268).

The spelling of 642066202022 in words is "six hundred forty-two billion, sixty-six million, two hundred two thousand, twenty-two".