155666011189 has 16 divisors (see below), whose sum is σ = 175692988800. Its totient is φ = 136843983936.

The previous prime is 155666011169. The next prime is 155666011211. The reversal of 155666011189 is 981110666551.

155666011189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155666011189 - 2⁵ = 155666011157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155666011159) 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 in 15 ways as a sum of consecutive naturals, for example, 1068259 + ... + 1205200.

It is an arithmetic number, because the mean of its divisors is an integer number (10980811800).

Almost surely, 2^155666011189 is an apocalyptic number.

It is an amenable number.

155666011189 is a deficient number, since it is larger than the sum of its proper divisors (20026977611).

155666011189 is a wasteful number, since it uses less digits than its factorization.

155666011189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273724.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 155666011189 in words is "one hundred fifty-five billion, six hundred sixty-six million, eleven thousand, one hundred eighty-nine".