166416034305077 has 2 divisors, whose sum is σ = 166416034305078. Its totient is φ = 166416034305076.

The previous prime is 166416034305049. The next prime is 166416034305089. The reversal of 166416034305077 is 770503430614661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120838332037201 + 45577702267876 = 10992649^2 + 6751126^2 .

It is an emirp because it is prime and its reverse (770503430614661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166416034305077 - 2¹⁶ = 166416034239541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166416034305277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83208017152538 + 83208017152539.

It is an arithmetic number, because the mean of its divisors is an integer number (83208017152539).

Almost surely, 2^{166416034305077} is an apocalyptic number.

It is an amenable number.

166416034305077 is a deficient number, since it is larger than the sum of its proper divisors (1).

166416034305077 is an equidigital number, since it uses as much as digits as its factorization.

166416034305077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 166416034305077 in words is "one hundred sixty-six trillion, four hundred sixteen billion, thirty-four million, three hundred five thousand, seventy-seven".