200255631021666 has 96 divisors (see below), whose sum is σ = 490175855769600. Its totient is φ = 58528457245440.

The previous prime is 200255631021643. The next prime is 200255631021739. The reversal of 200255631021666 is 666120136552002.

It is a super-2 number, since 2×200255631021666² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13229986 + ... + 23990493.

It is an arithmetic number, because the mean of its divisors is an integer number (5105998497600).

Almost surely, 2^{200255631021666} is an apocalyptic number.

200255631021666 is an abundant number, since it is smaller than the sum of its proper divisors (289920224747934).

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

200255631021666 is a wasteful number, since it uses less digits than its factorization.

200255631021666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37221464 (or 37221461 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

Adding to 200255631021666 its reverse (666120136552002), we get a palindrome (866375767573668).

The spelling of 200255631021666 in words is "two hundred trillion, two hundred fifty-five billion, six hundred thirty-one million, twenty-one thousand, six hundred sixty-six".