55611155111 has 16 divisors (see below), whose sum is σ = 57748314624. Its totient is φ = 53515957824.

The previous prime is 55611155101. The next prime is 55611155129. The reversal of 55611155111 is 11155111655.

It is a cyclic number.

It is not a de Polignac number, because 55611155111 - 2³⁴ = 38431285927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55611155101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288595 + ... + 1331051.

It is an arithmetic number, because the mean of its divisors is an integer number (3609269664).

Almost surely, 2^55611155111 is an apocalyptic number.

55611155111 is a deficient number, since it is larger than the sum of its proper divisors (2137159513).

55611155111 is a wasteful number, since it uses less digits than its factorization.

55611155111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42950.

The product of its digits is 3750, while the sum is 32.

Adding to 55611155111 its reverse (11155111655), we get a palindrome (66766266766).

The spelling of 55611155111 in words is "fifty-five billion, six hundred eleven million, one hundred fifty-five thousand, one hundred eleven".