166851668350 has 48 divisors (see below), whose sum is σ = 318804090768. Its totient is φ = 64922135040.

The previous prime is 166851668341. The next prime is 166851668371. The reversal of 166851668350 is 53866158661.

166851668350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166851668291 and 166851668300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11882934 + ... + 11896966.

It is an arithmetic number, because the mean of its divisors is an integer number (6641751891).

Almost surely, 2^166851668350 is an apocalyptic number.

166851668350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166851668350 is a deficient number, since it is larger than the sum of its proper divisors (151952422418).

166851668350 is a wasteful number, since it uses less digits than its factorization.

166851668350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20509 (or 20504 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 166851668350 in words is "one hundred sixty-six billion, eight hundred fifty-one million, six hundred sixty-eight thousand, three hundred fifty".