522140243726661 has 16 divisors (see below), whose sum is σ = 795725615967744. Its totient is φ = 298334601128304.

The previous prime is 522140243726641. The next prime is 522140243726669. The reversal of 522140243726661 is 166627342041225.

It is not a de Polignac number, because 522140243726661 - 2⁷ = 522140243726533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522140243726669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1301979315 + ... + 1302380288.

It is an arithmetic number, because the mean of its divisors is an integer number (49732850997984).

Almost surely, 2^{522140243726661} is an apocalyptic number.

It is an amenable number.

522140243726661 is a deficient number, since it is larger than the sum of its proper divisors (273585372241083).

522140243726661 is a wasteful number, since it uses less digits than its factorization.

522140243726661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604369160.

The product of its (nonzero) digits is 5806080, while the sum is 51.

Adding to 522140243726661 its reverse (166627342041225), we get a palindrome (688767585767886).

The spelling of 522140243726661 in words is "five hundred twenty-two trillion, one hundred forty billion, two hundred forty-three million, seven hundred twenty-six thousand, six hundred sixty-one".