6555111155 has 16 divisors (see below), whose sum is σ = 7895301120. Its totient is φ = 5224678272.

The previous prime is 6555111137. The next prime is 6555111163. The reversal of 6555111155 is 5511115556.

It is a cyclic number.

It is not a de Polignac number, because 6555111155 - 2⁸ = 6555110899 is a prime.

It is an unprimeable number.

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, 2438222 + ... + 2440908.

It is an arithmetic number, because the mean of its divisors is an integer number (493456320).

Almost surely, 2^6555111155 is an apocalyptic number.

6555111155 is a deficient number, since it is larger than the sum of its proper divisors (1340189965).

6555111155 is a wasteful number, since it uses less digits than its factorization.

6555111155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318.

The product of its digits is 18750, while the sum is 35.

The square root of 6555111155 is about 80963.6409445623. The cubic root of 6555111155 is about 1871.5151774707.

The spelling of 6555111155 in words is "six billion, five hundred fifty-five million, one hundred eleven thousand, one hundred fifty-five".