5511666661155 has 64 divisors (see below), whose sum is σ = 10066416545280. Its totient is φ = 2859234671232.

The previous prime is 5511666661139. The next prime is 5511666661159.

5511666661155 is nontrivially palindromic in base 10.

5511666661155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5511666661155 - 2⁴ = 5511666661139 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5511666661159) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16351632 + ... + 16685298.

It is an arithmetic number, because the mean of its divisors is an integer number (157287758520).

Almost surely, 2^{5511666661155} is an apocalyptic number.

5511666661155 is a deficient number, since it is larger than the sum of its proper divisors (4554749884125).

5511666661155 is a wasteful number, since it uses less digits than its factorization.

5511666661155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337025 (or 337019 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 54.

It can be divided in two parts, 5511 and 666661155, that added together give a palindrome (666666666).

The spelling of 5511666661155 in words is "five trillion, five hundred eleven billion, six hundred sixty-six million, six hundred sixty-one thousand, one hundred fifty-five".