155208668141 has 2 divisors, whose sum is σ = 155208668142. Its totient is φ = 155208668140.

The previous prime is 155208668117. The next prime is 155208668171. The reversal of 155208668141 is 141866802551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152010313225 + 3198354916 = 389885^2 + 56554^2 .

It is a cyclic number.

It is not a de Polignac number, because 155208668141 - 2¹⁴ = 155208651757 is a prime.

It is a super-2 number, since 2×155208668141² (a number of 23 digits) contains 22 as substring.

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 (155208668171) 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, 77604334070 + 77604334071.

It is an arithmetic number, because the mean of its divisors is an integer number (77604334071).

Almost surely, 2^155208668141 is an apocalyptic number.

It is an amenable number.

155208668141 is a deficient number, since it is larger than the sum of its proper divisors (1).

155208668141 is an equidigital number, since it uses as much as digits as its factorization.

155208668141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 155208668141 in words is "one hundred fifty-five billion, two hundred eight million, six hundred sixty-eight thousand, one hundred forty-one".