5661125111 has 2 divisors, whose sum is σ = 5661125112. Its totient is φ = 5661125110.

The previous prime is 5661125101. The next prime is 5661125149. The reversal of 5661125111 is 1115211665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5661125111 - 2¹⁰ = 5661124087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661125101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830562555 + 2830562556.

It is an arithmetic number, because the mean of its divisors is an integer number (2830562556).

Almost surely, 2^5661125111 is an apocalyptic number.

5661125111 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661125111 is an equidigital number, since it uses as much as digits as its factorization.

5661125111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 29.

The square root of 5661125111 is about 75240.4486363552. The cubic root of 5661125111 is about 1782.2457358388.

Adding to 5661125111 its reverse (1115211665), we get a palindrome (6776336776).

The spelling of 5661125111 in words is "five billion, six hundred sixty-one million, one hundred twenty-five thousand, one hundred eleven".