5661105511 has 2 divisors, whose sum is σ = 5661105512. Its totient is φ = 5661105510.

The previous prime is 5661105479. The next prime is 5661105521. The reversal of 5661105511 is 1155011665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661105511 - 2⁵ = 5661105479 is a prime.

It is a super-2 number, since 2×5661105511² = 64096231213349142242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661105521) by changing a digit.

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 as a sum of consecutive naturals, namely, 2830552755 + 2830552756.

It is an arithmetic number, because the mean of its divisors is an integer number (2830552756).

Almost surely, 2^5661105511 is an apocalyptic number.

5661105511 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661105511 is an equidigital number, since it uses as much as digits as its factorization.

5661105511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 5661105511 is about 75240.3183871520. The cubic root of 5661105511 is about 1782.2436790005.

The spelling of 5661105511 in words is "five billion, six hundred sixty-one million, one hundred five thousand, five hundred eleven".