166685018350 has 48 divisors (see below), whose sum is σ = 311831791488. Its totient is φ = 66288205440.

The previous prime is 166685018341. The next prime is 166685018359. The reversal of 166685018350 is 53810586661.

166685018350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166685018341) and next prime (166685018359).

It is a junction number, because it is equal to n+sod(n) for n = 166685018294 and 166685018303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166685018359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8877172 + ... + 8895928.

It is an arithmetic number, because the mean of its divisors is an integer number (6496495656).

Almost surely, 2^166685018350 is an apocalyptic number.

166685018350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166685018350 is a deficient number, since it is larger than the sum of its proper divisors (145146773138).

166685018350 is a wasteful number, since it uses less digits than its factorization.

166685018350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789 (or 19784 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 166685018350 in words is "one hundred sixty-six billion, six hundred eighty-five million, eighteen thousand, three hundred fifty".