155066566006117 has 2 divisors, whose sum is σ = 155066566006118. Its totient is φ = 155066566006116.

The previous prime is 155066566006019. The next prime is 155066566006159. The reversal of 155066566006117 is 711600665660551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150071099623201 + 4995466382916 = 12250351^2 + 2235054^2 .

It is an emirp because it is prime and its reverse (711600665660551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155066566006117 - 2⁴³ = 146270472983909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155066566006217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77533283003058 + 77533283003059.

It is an arithmetic number, because the mean of its divisors is an integer number (77533283003059).

Almost surely, 2^{155066566006117} is an apocalyptic number.

It is an amenable number.

155066566006117 is a deficient number, since it is larger than the sum of its proper divisors (1).

155066566006117 is an equidigital number, since it uses as much as digits as its factorization.

155066566006117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 155066566006117 in words is "one hundred fifty-five trillion, sixty-six billion, five hundred sixty-six million, six thousand, one hundred seventeen".