5561161129 has 16 divisors (see below), whose sum is σ = 5918345280. Its totient is φ = 5210714880.

The previous prime is 5561161049. The next prime is 5561161141. The reversal of 5561161129 is 9211611655.

It is a cyclic number.

It is not a de Polignac number, because 5561161129 - 2⁹ = 5561160617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561161169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727642 + ... + 735244.

It is an arithmetic number, because the mean of its divisors is an integer number (369896580).

Almost surely, 2^5561161129 is an apocalyptic number.

It is an amenable number.

5561161129 is a deficient number, since it is larger than the sum of its proper divisors (357184151).

5561161129 is a wasteful number, since it uses less digits than its factorization.

5561161129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8040.

The product of its digits is 16200, while the sum is 37.

The square root of 5561161129 is about 74573.1930991291. The cubic root of 5561161129 is about 1771.6930961341.

The spelling of 5561161129 in words is "five billion, five hundred sixty-one million, one hundred sixty-one thousand, one hundred twenty-nine".