155117589191 has 2 divisors, whose sum is σ = 155117589192. Its totient is φ = 155117589190.

The previous prime is 155117589073. The next prime is 155117589199. The reversal of 155117589191 is 191985711551.

155117589191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155117589191 - 2¹⁰ = 155117588167 is a prime.

It is a super-2 number, since 2×155117589191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155117589199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77558794595 + 77558794596.

It is an arithmetic number, because the mean of its divisors is an integer number (77558794596).

Almost surely, 2^155117589191 is an apocalyptic number.

155117589191 is a deficient number, since it is larger than the sum of its proper divisors (1).

155117589191 is an equidigital number, since it uses as much as digits as its factorization.

155117589191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 53.

The spelling of 155117589191 in words is "one hundred fifty-five billion, one hundred seventeen million, five hundred eighty-nine thousand, one hundred ninety-one".