522218230648666 has 16 divisors (see below), whose sum is σ = 783455700867840. Its totient is φ = 261066331310400.

The previous prime is 522218230648627. The next prime is 522218230648693. The reversal of 522218230648666 is 666846032812225.

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, 1458323341 + ... + 1458681391.

It is an arithmetic number, because the mean of its divisors is an integer number (48965981304240).

Almost surely, 2^{522218230648666} is an apocalyptic number.

522218230648666 is a deficient number, since it is larger than the sum of its proper divisors (261237470219174).

522218230648666 is a wasteful number, since it uses less digits than its factorization.

522218230648666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475509.

The product of its (nonzero) digits is 79626240, while the sum is 61.

The spelling of 522218230648666 in words is "five hundred twenty-two trillion, two hundred eighteen billion, two hundred thirty million, six hundred forty-eight thousand, six hundred sixty-six".