166468076885186 has 4 divisors (see below), whose sum is σ = 249702115327782. Its totient is φ = 83234038442592.

The previous prime is 166468076885171. The next prime is 166468076885189. The reversal of 166468076885186 is 681588670864661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142892497675225 + 23575579209961 = 11953765^2 + 4855469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166468076885186.

It is not an unprimeable number, because it can be changed into a prime (166468076885189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41617019221295 + ... + 41617019221298.

Almost surely, 2^{166468076885186} is an apocalyptic number.

166468076885186 is a deficient number, since it is larger than the sum of its proper divisors (83234038442596).

166468076885186 is an equidigital number, since it uses as much as digits as its factorization.

166468076885186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83234038442595.

The product of its (nonzero) digits is 4459069440, while the sum is 80.

The spelling of 166468076885186 in words is "one hundred sixty-six trillion, four hundred sixty-eight billion, seventy-six million, eight hundred eighty-five thousand, one hundred eighty-six".