155384617133 has 2 divisors, whose sum is σ = 155384617134. Its totient is φ = 155384617132.

The previous prime is 155384617051. The next prime is 155384617153. The reversal of 155384617133 is 331716483551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98848617604 + 56535999529 = 314402^2 + 237773^2 .

It is a cyclic number.

It is not a de Polignac number, because 155384617133 - 2¹⁰ = 155384616109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155384617153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77692308566 + 77692308567.

It is an arithmetic number, because the mean of its divisors is an integer number (77692308567).

Almost surely, 2^155384617133 is an apocalyptic number.

It is an amenable number.

155384617133 is a deficient number, since it is larger than the sum of its proper divisors (1).

155384617133 is an equidigital number, since it uses as much as digits as its factorization.

155384617133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The spelling of 155384617133 in words is "one hundred fifty-five billion, three hundred eighty-four million, six hundred seventeen thousand, one hundred thirty-three".