166688724082 has 4 divisors (see below), whose sum is σ = 250033086126. Its totient is φ = 83344362040.

The previous prime is 166688724061. The next prime is 166688724089. The reversal of 166688724082 is 280427886661.

166688724082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 151616005641 + 15072718441 = 389379^2 + 122771^2 .

It is not an unprimeable number, because it can be changed into a prime (166688724089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41672181019 + ... + 41672181022.

Almost surely, 2^166688724082 is an apocalyptic number.

166688724082 is a deficient number, since it is larger than the sum of its proper divisors (83344362044).

166688724082 is an equidigital number, since it uses as much as digits as its factorization.

166688724082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83344362043.

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 166688724082 in words is "one hundred sixty-six billion, six hundred eighty-eight million, seven hundred twenty-four thousand, eighty-two".