5555611011111 has 16 divisors (see below), whose sum is σ = 8466368089344. Its totient is φ = 3174381693504.

The previous prime is 5555611011091. The next prime is 5555611011169. The reversal of 5555611011111 is 1111101165555.

It is not a de Polignac number, because 5555611011111 - 2⁵ = 5555611011079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555611015111) 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, 10278990 + ... + 10805963.

It is an arithmetic number, because the mean of its divisors is an integer number (529148005584).

Almost surely, 2^{5555611011111} is an apocalyptic number.

5555611011111 is a deficient number, since it is larger than the sum of its proper divisors (2910757078233).

5555611011111 is a wasteful number, since it uses less digits than its factorization.

5555611011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21097510.

The product of its (nonzero) digits is 3750, while the sum is 33.

Adding to 5555611011111 its reverse (1111101165555), we get a palindrome (6666712176666).

The spelling of 5555611011111 in words is "five trillion, five hundred fifty-five billion, six hundred eleven million, eleven thousand, one hundred eleven".