166882513428377 has 2 divisors, whose sum is σ = 166882513428378. Its totient is φ = 166882513428376.

The previous prime is 166882513428349. The next prime is 166882513428413. The reversal of 166882513428377 is 773824315288661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129075706600201 + 37806806828176 = 11361149^2 + 6148724^2 .

It is a cyclic number.

It is not a de Polignac number, because 166882513428377 - 2¹⁸ = 166882513166233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166882513428377.

It is not a weakly prime, because it can be changed into another prime (166882513428347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83441256714188 + 83441256714189.

It is an arithmetic number, because the mean of its divisors is an integer number (83441256714189).

Almost surely, 2^{166882513428377} is an apocalyptic number.

It is an amenable number.

166882513428377 is a deficient number, since it is larger than the sum of its proper divisors (1).

166882513428377 is an equidigital number, since it uses as much as digits as its factorization.

166882513428377 is an evil number, because the sum of its binary digits is even.

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

The spelling of 166882513428377 in words is "one hundred sixty-six trillion, eight hundred eighty-two billion, five hundred thirteen million, four hundred twenty-eight thousand, three hundred seventy-seven".