5661061161101 has 2 divisors, whose sum is σ = 5661061161102. Its totient is φ = 5661061161100.

The previous prime is 5661061161071. The next prime is 5661061161127. The reversal of 5661061161101 is 1011611601665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3649528819876 + 2011532341225 = 1910374^2 + 1418285^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661061161101 - 2¹⁰ = 5661061160077 is a prime.

It is a super-2 number, since 2×5661061161101² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661061161401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830530580550 + 2830530580551.

It is an arithmetic number, because the mean of its divisors is an integer number (2830530580551).

Almost surely, 2^{5661061161101} is an apocalyptic number.

It is an amenable number.

5661061161101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661061161101 is an equidigital number, since it uses as much as digits as its factorization.

5661061161101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

Adding to 5661061161101 its reverse (1011611601665), we get a palindrome (6672672762766).

The spelling of 5661061161101 in words is "five trillion, six hundred sixty-one billion, sixty-one million, one hundred sixty-one thousand, one hundred one".