166334785258 has 24 divisors (see below), whose sum is σ = 263377443780. Its totient is φ = 78774474240.

The previous prime is 166334785247. The next prime is 166334785259. The reversal of 166334785258 is 852587433661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 147112903809 + 19221881449 = 383553^2 + 138643^2 .

It is not an unprimeable number, because it can be changed into a prime (166334785259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4124938 + ... + 4165066.

Almost surely, 2^166334785258 is an apocalyptic number.

166334785258 is a deficient number, since it is larger than the sum of its proper divisors (97042658522).

166334785258 is a wasteful number, since it uses less digits than its factorization.

166334785258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45910 (or 45891 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 58.

The spelling of 166334785258 in words is "one hundred sixty-six billion, three hundred thirty-four million, seven hundred eighty-five thousand, two hundred fifty-eight".