5661610133 has 4 divisors (see below), whose sum is σ = 5725223820. Its totient is φ = 5597996448.

The previous prime is 5661610117. The next prime is 5661610159. The reversal of 5661610133 is 3310161665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 907093924 + 4754516209 = 30118^2 + 68953^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661610133 - 2⁴ = 5661610117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5661610133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661610183) 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, 31806710 + ... + 31806887.

It is an arithmetic number, because the mean of its divisors is an integer number (1431305955).

Almost surely, 2^5661610133 is an apocalyptic number.

It is an amenable number.

5661610133 is a deficient number, since it is larger than the sum of its proper divisors (63613687).

5661610133 is an equidigital number, since it uses as much as digits as its factorization.

5661610133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63613686.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 5661610133 is about 75243.6717139721. The cubic root of 5661610133 is about 1782.2966328889.

Adding to 5661610133 its reverse (3310161665), we get a palindrome (8971771798).

The spelling of 5661610133 in words is "five billion, six hundred sixty-one million, six hundred ten thousand, one hundred thirty-three".