166882513428737 has 4 divisors (see below), whose sum is σ = 167078155297620. Its totient is φ = 166686871559856.

The previous prime is 166882513428691. The next prime is 166882513428767. The reversal of 166882513428737 is 737824315288661.

166882513428737 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 2 ways, for example, as 22227915193201 + 144654598235536 = 4714649^2 + 12027244^2 .

It is a cyclic number.

It is not a de Polignac number, because 166882513428737 - 2¹⁶ = 166882513363201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166882513428767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97820933162 + ... + 97820934867.

It is an arithmetic number, because the mean of its divisors is an integer number (41769538824405).

Almost surely, 2^{166882513428737} is an apocalyptic number.

It is an amenable number.

166882513428737 is a deficient number, since it is larger than the sum of its proper divisors (195641868883).

166882513428737 is an equidigital number, since it uses as much as digits as its factorization.

166882513428737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195641868882.

The product of its digits is 650280960, while the sum is 71.

The spelling of 166882513428737 in words is "one hundred sixty-six trillion, eight hundred eighty-two billion, five hundred thirteen million, four hundred twenty-eight thousand, seven hundred thirty-seven".