5511666661154 has 8 divisors (see below), whose sum is σ = 8267512453788. Its totient is φ = 2755829176560.

The previous prime is 5511666661139. The next prime is 5511666661159. The reversal of 5511666661154 is 4511666661155.

It can be written as a sum of positive squares in 2 ways, for example, as 5004191370025 + 507475291129 = 2237005^2 + 712373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×5511666661154² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5511666661096 and 5511666661105.

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 3 ways as a sum of consecutive naturals, for example, 5117 + ... + 3320144.

Almost surely, 2^{5511666661154} is an apocalyptic number.

5511666661154 is a deficient number, since it is larger than the sum of its proper divisors (2755845792634).

5511666661154 is a wasteful number, since it uses less digits than its factorization.

5511666661154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154020.

The product of its digits is 3888000, while the sum is 53.

Subtracting from 5511666661154 its reverse (4511666661155), we obtain a palindrome (999999999999).

The spelling of 5511666661154 in words is "five trillion, five hundred eleven billion, six hundred sixty-six million, six hundred sixty-one thousand, one hundred fifty-four".