642066202023 has 32 divisors (see below), whose sum is σ = 926397081792. Its totient is φ = 394071091200.

The previous prime is 642066201991. The next prime is 642066202031. The reversal of 642066202023 is 320202660246.

It is not a de Polignac number, because 642066202023 - 2⁵ = 642066201991 is a prime.

It is a super-3 number, since 3×642066202023³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642066202033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7036 + ... + 1133217.

It is an arithmetic number, because the mean of its divisors is an integer number (28949908806).

Almost surely, 2^642066202023 is an apocalyptic number.

642066202023 is a deficient number, since it is larger than the sum of its proper divisors (284330879769).

642066202023 is a wasteful number, since it uses less digits than its factorization.

642066202023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140515.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 642066202023 its reverse (320202660246), we get a palindrome (962268862269).

The spelling of 642066202023 in words is "six hundred forty-two billion, sixty-six million, two hundred two thousand, twenty-three".