166863287122 has 16 divisors (see below), whose sum is σ = 286663890240. Its totient is φ = 71359702128.

The previous prime is 166863287119. The next prime is 166863287179. The reversal of 166863287122 is 221782368661.

It is a super-2 number, since 2×166863287122² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166863287122.

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, 12754497 + ... + 12767572.

It is an arithmetic number, because the mean of its divisors is an integer number (17916493140).

Almost surely, 2^166863287122 is an apocalyptic number.

166863287122 is a deficient number, since it is larger than the sum of its proper divisors (119800603118).

166863287122 is a wasteful number, since it uses less digits than its factorization.

166863287122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25522545.

The product of its digits is 2322432, while the sum is 52.

The spelling of 166863287122 in words is "one hundred sixty-six billion, eight hundred sixty-three million, two hundred eighty-seven thousand, one hundred twenty-two".