200020168520 has 32 divisors (see below), whose sum is σ = 452740276800. Its totient is φ = 79528974528.

The previous prime is 200020168507. The next prime is 200020168631. The reversal of 200020168520 is 25861020002.

It is a self number, because there is not a number n which added to its sum of digits gives 200020168520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14964890 + ... + 14978249.

It is an arithmetic number, because the mean of its divisors is an integer number (14148133650).

Almost surely, 2^200020168520 is an apocalyptic number.

200020168520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200020168520 is an abundant number, since it is smaller than the sum of its proper divisors (252720108280).

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

200020168520 is a wasteful number, since it uses less digits than its factorization.

200020168520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29943317 (or 29943313 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 200020168520 its reverse (25861020002), we get a palindrome (225881188522).

The spelling of 200020168520 in words is "two hundred billion, twenty million, one hundred sixty-eight thousand, five hundred twenty".