220851538166668 has 12 divisors (see below), whose sum is σ = 386501836451472. Its totient is φ = 110422442037680.

The previous prime is 220851538166657. The next prime is 220851538166713. The reversal of 220851538166668 is 866661835158022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831612055 + ... + 831877582.

It is an arithmetic number, because the mean of its divisors is an integer number (32208486370956).

Almost surely, 2^{220851538166668} is an apocalyptic number.

It is an amenable number.

220851538166668 is a deficient number, since it is larger than the sum of its proper divisors (165650298284804).

220851538166668 is a wasteful number, since it uses less digits than its factorization.

220851538166668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663522832 (or 1663522830 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 67.

The spelling of 220851538166668 in words is "two hundred twenty trillion, eight hundred fifty-one billion, five hundred thirty-eight million, one hundred sixty-six thousand, six hundred sixty-eight".