200606253991 has 16 divisors (see below), whose sum is σ = 235691517600. Its totient is φ = 168330741120.

The previous prime is 200606253961. The next prime is 200606254001. The reversal of 200606253991 is 199352606002.

It is a cyclic number.

It is not a de Polignac number, because 200606253991 - 2¹¹ = 200606251943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200606253961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3193401 + ... + 3255613.

It is an arithmetic number, because the mean of its divisors is an integer number (14730719850).

Almost surely, 2^200606253991 is an apocalyptic number.

200606253991 is a deficient number, since it is larger than the sum of its proper divisors (35085263609).

200606253991 is a wasteful number, since it uses less digits than its factorization.

200606253991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84786.

The product of its (nonzero) digits is 174960, while the sum is 43.

Adding to 200606253991 its reverse (199352606002), we get a palindrome (399958859993).

The spelling of 200606253991 in words is "two hundred billion, six hundred six million, two hundred fifty-three thousand, nine hundred ninety-one".