166905664346 has 16 divisors (see below), whose sum is σ = 251287692768. Its totient is φ = 83143647600.

The previous prime is 166905664339. The next prime is 166905664361. The reversal of 166905664346 is 643466509661.

It is a junction number, because it is equal to n+sod(n) for n = 166905664291 and 166905664300.

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, 475916 + ... + 748536.

It is an arithmetic number, because the mean of its divisors is an integer number (15705480798).

Almost surely, 2^166905664346 is an apocalyptic number.

166905664346 is a deficient number, since it is larger than the sum of its proper divisors (84382028422).

166905664346 is a wasteful number, since it uses less digits than its factorization.

166905664346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273757.

The product of its (nonzero) digits is 16796160, while the sum is 56.

The spelling of 166905664346 in words is "one hundred sixty-six billion, nine hundred five million, six hundred sixty-four thousand, three hundred forty-six".