851105666166 has 64 divisors (see below), whose sum is σ = 1959907000320. Its totient is φ = 241358307840.

The previous prime is 851105666149. The next prime is 851105666171. The reversal of 851105666166 is 661666501158.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66273906 + ... + 66286746.

It is an arithmetic number, because the mean of its divisors is an integer number (30623546880).

Almost surely, 2^851105666166 is an apocalyptic number.

851105666166 is an abundant number, since it is smaller than the sum of its proper divisors (1108801334154).

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

851105666166 is a wasteful number, since it uses less digits than its factorization.

851105666166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24509.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 851105666166 in words is "eight hundred fifty-one billion, one hundred five million, six hundred sixty-six thousand, one hundred sixty-six".