155554616011 has 2 divisors, whose sum is σ = 155554616012. Its totient is φ = 155554616010.

The previous prime is 155554615991. The next prime is 155554616051. The reversal of 155554616011 is 110616455551.

It is a happy number.

155554616011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (155554616051) can be obtained adding 155554616011 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155554616011 - 2⁹ = 155554615499 is a prime.

It is not a weakly prime, because it can be changed into another prime (155554616051) 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, 77777308005 + 77777308006.

It is an arithmetic number, because the mean of its divisors is an integer number (77777308006).

Almost surely, 2^155554616011 is an apocalyptic number.

155554616011 is a deficient number, since it is larger than the sum of its proper divisors (1).

155554616011 is an equidigital number, since it uses as much as digits as its factorization.

155554616011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 40.

The spelling of 155554616011 in words is "one hundred fifty-five billion, five hundred fifty-four million, six hundred sixteen thousand, eleven".