201243435366 has 16 divisors (see below), whose sum is σ = 402585737904. Its totient is φ = 67064667264.

The previous prime is 201243435353. The next prime is 201243435373. The reversal of 201243435366 is 663534342102.

201243435366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4092991 + ... + 4141866.

It is an arithmetic number, because the mean of its divisors is an integer number (25161608619).

Almost surely, 2^201243435366 is an apocalyptic number.

201243435366 is an abundant number, since it is smaller than the sum of its proper divisors (201342302538).

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

201243435366 is a wasteful number, since it uses less digits than its factorization.

201243435366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8238935.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 201243435366 its reverse (663534342102), we get a palindrome (864777777468).

The spelling of 201243435366 in words is "two hundred one billion, two hundred forty-three million, four hundred thirty-five thousand, three hundred sixty-six".