12155556546111 has 16 divisors (see below), whose sum is σ = 17855867046528. Its totient is φ = 7294063332000.

The previous prime is 12155556546073. The next prime is 12155556546131. The reversal of 12155556546111 is 11164565555121.

It is not a de Polignac number, because 12155556546111 - 2¹¹ = 12155556544063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155556546131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1823512501 + ... + 1823519166.

It is an arithmetic number, because the mean of its divisors is an integer number (1115991690408).

Almost surely, 2^{12155556546111} is an apocalyptic number.

12155556546111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12155556546111 is a deficient number, since it is larger than the sum of its proper divisors (5700310500417).

12155556546111 is a wasteful number, since it uses less digits than its factorization.

12155556546111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647031782.

The product of its digits is 900000, while the sum is 48.

The spelling of 12155556546111 in words is "twelve trillion, one hundred fifty-five billion, five hundred fifty-six million, five hundred forty-six thousand, one hundred eleven".